Signals | Delphi

Name	Data Source	Description	Geographic Scope	Geographic Granularity, aka Geo-Level	Available Since	Available Until	Temporal Granularity	Reporting Cadence	Reporting Lag(nominal)	Revision Cadence	Demographic Scope	Pathogen / Syndrome	Severity Pyramid Rungs	Missingness	License / Data Use Restrictions
COVID-Related Doctor Visits	Change Healthcare	Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Covid	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
COVID-Related Doctor Visits (Day-adjusted)	Change Healthcare	Estimated percentage of outpatient doctor visits primarily about COVID-related symptoms, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Covid	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
COVID-Confirmed Doctor Visits	Change Healthcare	Estimated percentage of outpatient doctor visits with confirmed COVID-19, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Covid	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
COVID-Confirmed Doctor Visits (Day-adjusted)	Change Healthcare	Estimated percentage of outpatient doctor visits with confirmed COVID-19, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Covid	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
Influenza-Confirmed Doctor Visits	Change Healthcare	Estimated percentage of outpatient doctor visits with confirmed influenza, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Flu	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
Influenza-Confirmed Doctor Visits (Day-adjusted)	Change Healthcare	Estimated percentage of outpatient doctor visits with confirmed influenza, based on Change Healthcare claims data that has been de-identified in accordance with HIPAA privacy regulations, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	4-5 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 4-6 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 45 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Change Healthcare network	Flu	outpatient visit	Data is available for nearly all (99%) of counties. Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
PCR Test Positivity Rate	Covid Act Now (CAN)	Proportion of PCR specimens tested that have a positive result	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-03-01	2021-12-02	day	daily	2-9 days	Daily. Most recent test positivity rates do not change substantially (having a median delta of close to 0). However, most recent total tests performed are expected to increase in later data revisions (having a median increase of 7%). Values more than 5 days in the past are expected to remain fairly static (with total tests performed having a median increase of 1% of less), as most major revisions have already occurred.	Hospital patients	Covid	infected	Data is available for nearly all (99%) of counties. A few counties, most notably in California, are not covered by this data source Data is available for all states.	CC BY-NC See license
Total Number of PCR Tests	Covid Act Now (CAN)	Total number of PCR specimens tested	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-03-01	2021-12-02	day	daily	2-9 days	Daily. Most recent test positivity rates do not change substantially (having a median delta of close to 0). However, most recent total tests performed are expected to increase in later data revisions (having a median increase of 7%). Values more than 5 days in the past are expected to remain fairly static (with total tests performed having a median increase of 1% of less), as most major revisions have already occurred.	Hospital patients	Covid	population	Data is available for nearly all (99%) of counties. A few counties, most notably in California, are not covered by this data source Data is available for all states.	CC BY-NC See license
COVID-Related Doctor Visits	Optum	Estimated percentage of outpatient doctor visits that are primarily about COVID-related symptoms, based on data from health system partners, smoothed in time using a Gaussian linear smoother	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	3-6 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 5-7 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 50 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	outpatient visit	Data is available for about 80% of counties Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
COVID-Related Doctor Visits (Day-adjusted)	Optum	Estimated percentage of outpatient doctor visits that are primarily about COVID-related symptoms, based on data from health system partners, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	3-6 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 5-7 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 50 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	outpatient visit	Data is available for about 80% of counties Data is available for all states and some territories.	CC BY-NC See license. DUA uses generic contract terms.
booster_doses_admin_7dav	US Government	COVID-19 booster vaccine doses administered each day, based on the daily Community Profile Report (CPR) published by the Data Strategy and Execution Workgroup of the White House COVID-19 Team, smoothed in time with a 7-day average. "Doses administered shown by date of report, not date of administration. ... [A] booster dose includes anyone who is fully vaccinated and has received another dose of COVID-19 vaccine since August 13, 2021. This includes people who received booster doses and people who received additional doses." - from the CPR data dictionary.	USA	hhs nation (by Delphi) state	2021-11-01	2023-02-22	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed COVID Admissions per day	US Government	All confirmed COVID-19 hospital admissions occurring each day, based on the daily Community Profile Report published by the Data Strategy and Execution Workgroup of the White House COVID-19 Team, smoothed in time with a 7-day average. Other sources of hospital admissions data in COVIDcast include [HHS](https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hhs.html) and [medical insurance claims](https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hospital-admissions.html). The CPR differs from these sources in that it is part of the public health surveillance stream (like HHS, unlike claims) but is available at a daily-county level (like claims, unlike HHS). CPR hospital admissions figures at the state level and above are meant to match those from HHS, but are known to differ. See the [Limitations section of the technical documentation](https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html#limitations) for more details.	USA	county hhs msa nation (by Delphi) state	2020-12-16	2023-02-21	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	hospitalized	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed COVID Admissions per day (per 100k people)	US Government		USA	county hhs msa nation (by Delphi) state	2020-12-16	2023-02-21	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	hospitalized	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
doses_admin_7dav	US Government	COVID-19 vaccine doses administered each day, based on the daily Community Profile Report (CPR) published by the Data Strategy and Execution Workgroup of the White House COVID-19 Team, smoothed in time with a 7-day average. "Doses administered shown by date of report, not date of administration." - from the CPR data dictionary.	USA	hhs nation (by Delphi) state	2021-05-02	2023-02-22	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
people_booster_doses	US Government	Cumulative number of people who have received a booster dose of the COVID-19 vaccine, based on the daily Community Profile Report (CPR) published by the Data Strategy and Execution Workgroup of the White House COVID-19 Team, smoothed in time with a 7-day average. "The count of people who received a booster dose includes anyone who is fully vaccinated and has received another dose of COVID-19 vaccine since 2021-08-13. This includes people who received booster doses and people who received additional doses" - from the CPR data dictionary.	USA	hhs nation (by Delphi) state	2021-11-01	2023-02-22	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
people_full_vaccinated	US Government	Cumulative number of people who have received a full course of the COVID-19 vaccine, based on the daily Community Profile Report (CPR) published by the Data Strategy and Execution Workgroup of the White House COVID-19 Team, smoothed in time with a 7-day average. "People fully vaccinated includes those who have received two doses of the Pfizer-BioNTech or Moderna vaccine and those who have received one dose of the J&J/Janssen vaccine" - from the CPR data dictionary.	USA	county hhs msa nation (by Delphi) state	2021-01-15	2023-02-22	day	daily	3-9 days	Daily. This data source is susceptible to large corrections that can create strange data effects such as negative counts and sudden changes of 1M+ counts from one day to the next.		Covid	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
COVID-Like Symptoms	Delphi/Meta	Estimated percentage of people with COVID-like illness For this signal, we estimate the percentage of people self-reporting COVID-like symptoms, defined here as fever along with either cough, shortness of breath, or difficulty breathing. While many other conditions can cause these symptoms, comparing the rates of COVID-like symptoms across the country can suggest where COVID is most active.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-26	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms (Unweighted 7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms (7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community	Delphi/Meta	Estimated percentage of people reporting illness in their local community We also ask them if they know anyone in their local community who has COVID-like symptoms, defined here as fever along with either cough, shortness of breath, or difficulty breathing. For this indicator, we estimate the percentage of people who know someone, in their household or outside it, who has these symptoms. While many conditions can cause these symptoms, not just COVID, comparing the rates across the country can suggest where COVID is most active.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-26	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community (Unweighted 7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 40% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community (7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 35% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Flu-Like Symptoms	Delphi/Meta	Estimated percentage of people with influenza-like illness For this signal, we estimate the percentage of people self-reporting influenza-like symptoms, defined here as fever along with either cough or sore throat. While many other conditions can cause these symptoms, comparing the rates of influenza-like symptoms across the country can suggest where the flu is most active.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Flu	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Flu-Like Symptoms (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-26	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Flu	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Flu-Like Symptoms (Unweighted 7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Flu	symptomatic	Data is available for about 50% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Flu-Like Symptoms (7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Flu	symptomatic	Data is available for about 50% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community Outside Household	Delphi/Meta	Estimated percentage of people reporting illness in their local community not including their household We also ask them if they know anyone in their local community who has COVID-like symptoms, defined here as fever along with either cough, shortness of breath, or difficulty breathing. For this indicator, we estimate the percentage of people who know someone outside their household who has these symptoms. While many conditions can cause these symptoms, not just COVID, comparing the rates across the country can suggest where COVID is most active.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community Outside Household (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-26	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community Outside Household (Unweighted 7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 40% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Like Symptoms in Community Outside Household (7-day average)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-15	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	symptomatic	Data is available for about 35% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance	Delphi/Meta	Estimated percentage of respondents who would definitely or probably choose to get vaccinated, if a COVID-19 vaccine were offered to them today. We also ask questions about well-being and various mitigation measures, including vaccine acceptance. For this signal, we estimate the percentage of people who would "definitely" or "probably" choose to be vaccinated if a COVID vaccine were offered to them today. Note: Until January 6, 2021, all respondents answered this question; beginning on that date, only respondents who said they have not received a COVID vaccine are asked this question. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance Among Unvaccinated	Delphi/Meta	Estimated percentage of respondents who would definitely or probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated and do not have an appointment to do so. Based on survey item V3a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance Among Unvaccinated (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Anxious (Last Five Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling "nervous, anxious, or on edge" for most or all of the past 5 days. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Anxious (Last Five Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Anxious (Last Seven Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling "nervous, anxious, or on edge" for most or all of the past 7 days. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Anxious (Last Seven Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Appointments Among Unvaccinated	Delphi/Meta	Estimated percentage of respondents who have an appointment to get a COVID-19 vaccine, among respondents who have not yet been vaccinated. Based on survey item V11a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Appointments Among Unvaccinated (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance and Appointments Among Unvaccinated	Delphi/Meta	Estimated percentage of respondents who either have an appointment to get a COVID-19 vaccine or would definitely or probably choose to get vaccinated, if a vaccine were offered to them today, among respondents who have not yet been vaccinated Based on survey items V11a and V3a. V11a was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance and Appointments Among Unvaccinated (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Children Can't Get COVID-19	Delphi/Meta	Estimated percentage of people who believe that the statement “Children cannot get COVID-19” is definitely or probably true. Based on survey item I2. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Children Can't Get COVID-19 (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief COVID-19 Deliberately Created to Manipulate Events	Delphi/Meta	Estimated percentage of people who believe that the statement “COVID-19 was deliberately created by a small group of people who secretly manipulate world events” is definitely or probably true. Based on survey item I3. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief COVID-19 Deliberately Created to Manipulate Events (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Social Distancing is Effective	Delphi/Meta	Estimated percentage of respondents who believe that social distancing is either very or moderately effective for preventing the spread of COVID-19. Based on survey item G2. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Social Distancing is Effective (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief COVID-19 Exploited to Control People	Delphi/Meta	Estimated percentage of people who indicate that the statement “The COVID-19 pandemic is being exploited by the government to control people” is definitely or probably true. Based on survey item I4. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief COVID-19 Exploited to Control People (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Masks Are Effective	Delphi/Meta	Estimated percentage of respondents who believe that wearing a face mask is either very or moderately effective for preventing the spread of COVID-19. Based on survey item G2. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Masks Are Effective (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Vaccines Make Masks Unnecessary	Delphi/Meta	Estimated percentage of people who believe that the statement “Getting the COVID-19 vaccine means that you can stop wearing a mask around people outside your household” is definitely or probably true. Based on survey item I1. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Belief Vaccines Make Masks Unnecessary (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccinated	Delphi/Meta	Estimated percentage of respondents who have already received a vaccine for COVID-19. Note: The Centers for Disease Control compiles data on vaccine administration across the United States. This signal may differ from CDC data because of survey biases and should not be treated as authoritative. However, the survey signal is not subject to the lags and reporting problems in official vaccination data.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-06	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccinated (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-06	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance: Vaccinated, Appointment, or Accept	Delphi/Meta	Estimated percentage of respondents who either have already received a COVID vaccine, have an appointment to receive a COVID vaccine, or would definitely or probably choose to receive one if it were offered to them today.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccine Acceptance: Vaccinated, Appointment, or Accept (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Friends and Family Vaccinated	Delphi/Meta	Estimated percentage of respondents who report that most of their friends and family have received a COVID-19 vaccine. Based on survey item H3. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Friends and Family Vaccinated (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccinated or Vaccine Acceptance	Delphi/Meta	Estimated percentage of respondents who either have already received a COVID vaccine or would definitely or probably choose to get vaccinated, if a vaccine were offered to them today. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-19 Vaccinated or Vaccine Acceptance (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Delayed Healthcare Due to Cost	Delphi/Meta	Estimated percentage of respondents who have ever delayed or not sought medical care in the past year because of cost. Based on survey item K1. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Delayed Healthcare Due to Cost (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Depressed (Last Five Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling depressed for most or all of the past 5 days. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Depressed (Last Five Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Depressed (Last Seven Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling depressed for most or all of the past 7 days. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Depressed (Last Seven Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Do Not Spend Time	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they don't spend time with high-risk people, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Do Not Spend Time (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Had Covid	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they already had the illness, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Had Covid (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not Beneficial	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they don't think vaccines are beneficial, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not Beneficial (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not High Risk	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they are not in a high-risk group, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not High Risk (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not Serious	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they don't believe COVID-19 is a serious illness, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Not Serious (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Other	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine for another reason, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Other (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Precautions	Delphi/Meta	Estimated percentage of respondents who say they don't need to get a COVID-19 vaccine because they will use other precautions, such as a mask, instead, among respondents who provided at least one reason for why they believe a COVID-19 vaccine is unnecessary.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Not Needed: Precautions (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Felt Isolated (Last Five Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling "isolated from others" for most or all of the past 5 days. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Felt Isolated (Last Five Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Felt Isolated (Last Seven Days)	Delphi/Meta	Estimated percentage of respondents who reported feeling "isolated from others" for most or all of the past 7 days. This item was shown to respondents starting in Wave 10, March 2, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Felt Isolated (Last Seven Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Ever Had COVID-19	Delphi/Meta	Estimated percentage of people who report having ever had COVID-19. Based on survey item B13. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Ever Had COVID-19 (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Allergic	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about having an allergic reaction, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Allergic (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Cost	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about the cost, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Cost (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Dislike Vaccines	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they dislike vaccines, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-12-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Dislike Vaccines (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-12-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitance: Dislike Vaccines Generally	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they dislike vaccines generally, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitance: Dislike Vaccines Generally (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Distrust Government	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they don't trust the government, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Distrust Government (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Distrust Vaccines	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they don't trust COVID-19 vaccines, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Distrust Vaccines (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Health Condition	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they have a health condition that may impact the safety of a COVID-19 vaccine, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Health Condition (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Ineffective	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they don't know if a COVID-19 vaccine will work, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Ineffective (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Low Priority	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they think other people need it more than they do, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Low Priority (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Was Not Recommended	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because their doctor did not recommend it, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Was Not Recommended (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Other	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated for another reason, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Other (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Pregnant	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they are pregnant or breastfeeding, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Pregnant (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Religious	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because it is against their religious beliefs, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Religious (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Side Effects	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they are worried about side effects, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Side Effects (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Unnecessary	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they don't believe they need a COVID-19 vaccine, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Unnecessary (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Wait For Safety	Delphi/Meta	Estimated percentage of respondents who say they are hesitant to get vaccinated because they want to wait to see if the COVID-19 vaccines are safe, among respondents who answered "Yes, probably", "No, probably not", or "No, definitely not" when asked if they would get vaccinated if offered. This item was shown to respondents starting in Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Hesitancy: Wait For Safety (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Full-time	Delphi/Meta	Estimated percentage of people who had any children attending in-person school on a full-time basis, among people reporting any pre-K-grade 12 children in their household.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-12-24	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Full-time (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-12-24	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Full-time (Oldest Child)	Delphi/Meta	Estimated percentage of people whose oldest child is attending in-person school on a full-time basis, among people reporting any pre-K-grade 12 children in their household. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Full-time (Oldest Child) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Part-time	Delphi/Meta	Estimated percentage of people who had any children attending in-person school on a part-time basis, among people reporting any pre-K-grade 12 children in their household.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-12-24	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Part-time (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-12-24	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Part-time (Oldest Child)	Delphi/Meta	Estimated percentage of people whose oldest child is attending in-person school on a part-time basis, among people reporting any pre-K-grade 12 children in their household. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
In-person School Part-time (Oldest Child) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Large Event (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who "attended an event with more than 10 people" in the past 24 hours. This item was shown to respondents starting in Wave 4, September 8, 2020. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Large Event (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Large Event Indoors (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who "attended an indoor event with more than 10 people" in the past 24 hours. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Large Event Indoors (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Socially Distanced	Delphi/Meta	Estimated percentage of respondents who reported that all or most people they enountered in public in the past 7 days maintained a distance of at least 6 feet. Respondents who said that they have not been in public for the past 7 days are excluded. Based on survey item H1. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Socially Distanced (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Masked When Not Distanced	Delphi/Meta	Estimated percentage of respondents who say that most or all other people wear masks, when they are in public and social distancing is not possible. This item was shown to respondents starting in Wave 5, November 24, 2020. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Masked When Not Distanced (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-11-24	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Masked	Delphi/Meta	Estimated percentage of respondents who say that most or all other people wear masks, when they are in public. Respondents who said that they have not been in public for the past 7 days are excluded. Based on survey item H2. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Other People Masked (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Public Transit (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who "used public transit" in the past 24 hours This item was shown to respondents starting in Wave 4, September 8, 2020.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Public Transit (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Race Treated Fairly in Healthcare	Delphi/Meta	Estimated percentage of respondents who somewhat or strongly agree that people of their race are treated fairly in a healthcare setting. Based on survey item K2. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Race Treated Fairly in Healthcare (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Received 2 Vaccine Doses	Delphi/Meta	Estimated percentage of respondents who have received two doses of a COVID-19 vaccine, among respondents who have received either one or two doses of a COVID-19 vaccine. This item was shown to respondents starting in Wave 7, January 12, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-13	2021-11-14	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Received 2 Vaccine Doses (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-13	2021-11-14	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From CDC	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from the CDC in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From CDC (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Scientists	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from scientists and other health experts in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Scientists (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Friends	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from friends and family in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Friends (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Health Officials	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from government health authorities or officials in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Health Officials (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Journalists	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from journalists in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Journalists (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Local Health Workers	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from local health workers, clinics, and community organizations in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Local Health Workers (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From None of Above	Delphi/Meta	Estimated percentage of respondents who in the past 7 days received news about COVID-19 from none of the listed sources in the question. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From None of Above (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Politicians	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from politicians in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Politicians (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Religious Leaders	Delphi/Meta	Estimated percentage of respondents who received news about COVID-19 from religious leaders in the past 7 days. Based on survey item I5. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID News From Religious Leaders (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Restaurant (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who went to a "bar, restaurant, or cafe" in the past 24 hours. This item was shown to respondents starting in Wave 4, September 8, 2020. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Restaurant (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Restaurant Indoors (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who went to an indoor "bar, restaurant, or cafe" in the past 24 hours. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Restaurant Indoors (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Screening Tested Positive (Last 14 Days)	Delphi/Meta	Estimated test positivity rate (percent) among people tested for COVID-19 in the past 14 days who were being screened with no symptoms or known exposure. Note: Until Wave 11 (May 19, 2021), this included people who said they were tested while receiving other medical care, because their employer or school required it, after attending a large outdoor gathering, or prior to visiting friends or family. After that date, this includes people who said they were tested while receiving other medical care, because their employer or school required it, prior to visiting friends or family, or prior to domestic or international travel.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-19	2022-02-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Screening Tested Positive (Last 14 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-19	2022-02-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Shop (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who went to a "market, grocery store, or pharmacy" in the past 24 hours Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Shop (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Shop Indoors (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who went to an "indoor market, grocery store, or pharmacy" in the past 24 hours This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Shop Indoors (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Spent Time (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who "spent time with someone who isn't currently staying with you" in the past 24 hours Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Spent Time (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Spent Time Indoors (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who "spent time indoors with someone who isn't currently staying with you" in the past 24 hours This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Spent Time Indoors (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Tested (Last 14 Days)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Tested (Last 14 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Tested Positive (Last 14 Days)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Tested Positive (Last 14 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	ascertained (case)	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Travel Outside State (Last 5 Days)	Delphi/Meta	Estimated percentage of respondents who report traveling outside their state in the past 5 days Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Data is available for about 45% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Travel Outside State (Last 5 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-04-06	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Data is available for about 45% of counties. Data is available for all states and some territories. Availability declines over time as survey response rate decreases	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Travel Outside State (Last 7 Days)	Delphi/Meta	Estimated percentage of respondents who report traveling outside their state in the past 7 days. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-02-20	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Travel Outside State (Last 7 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-02-20	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From CDC	Delphi/Meta	Estimated percentage of respondents who trust the Centers for Disease Control (CDC) to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From CDC (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Doctors	Delphi/Meta	Estimated percentage of respondents who trust doctors and other health professionals they go to for medical care to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Doctors (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Scientists	Delphi/Meta	Estimated percentage of respondents who trust scientists and other health experts to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Scientists (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Friends	Delphi/Meta	Estimated percentage of respondents who trust friends and family to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Friends (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Health Officials	Delphi/Meta	Estimated percentage of respondents who trust government health officials to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Health Officials (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Journalists	Delphi/Meta	Estimated percentage of respondents who trust journalists to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Journalists (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Politicians	Delphi/Meta	Estimated percentage of respondents who trust politicians to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Politicians (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Religious Leaders	Delphi/Meta	Estimated percentage of respondents who trust religious leaders to provide accurate news and information about COVID-19. Based on survey item I6. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Trust COVID Info From Religious Leaders (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Get COVID-19 Vaccine Within a Month	Delphi/Meta	Estimated percentage of respondents who report that they will try to get the COVID-19 vaccine within a week to a month, among unvaccinated respondents who do not have a vaccination appointment and who are uncertain about getting vaccinated (i.e. did not say they definitely would get vaccinated, nor that they definitely would not). Based on survey item V16. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Get COVID-19 Vaccine Within a Month (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Vaccinate Oldest Child for COVID-19	Delphi/Meta	Estimated percentage of respondents with children who report that they will definitely or probably get the vaccine for their oldest child. Based on survey item P3. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Vaccinate Oldest Child for COVID-19 (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Vaccinate Children for COVID-19	Delphi/Meta	Estimated percentage of respondents with children who report that they will definitely or probably get the vaccine for their children. Based on survey item E4. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2021-12-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Will Vaccinate Children for COVID-19 (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2021-12-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Appointment Locations	Delphi/Meta	Estimated percentage of respondents who report available appointment locations as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Appointment Locations (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Appointment Locations	Delphi/Meta	Estimated percentage of respondents who report available appointment locations as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Appointment Locations (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Appointment Locations	Delphi/Meta	Estimated percentage of respondents who report available appointment locations as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Appointment Locations (Unweighted)	Delphi/Meta		USA	county (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Appointment Times	Delphi/Meta	Estimated percentage of respondents who report lack of vaccine or vaccine appointments as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Appointment Times (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Appointment Times	Delphi/Meta	Estimated percentage of respondents who report available appointment times as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Appointment Times (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Appointment Times	Delphi/Meta	Estimated percentage of respondents who report available appointment times as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Appointment Times (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Childcare	Delphi/Meta	Estimated percentage of respondents who report lack of childcare as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Childcare (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Childcare	Delphi/Meta	Estimated percentage of respondents who report lack of childcare as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Childcare (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Childcare	Delphi/Meta	Estimated percentage of respondents who report lack of childcare as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Childcare (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Documents	Delphi/Meta	Estimated percentage of respondents who report inability to provide required documents as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Documents (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Documents	Delphi/Meta	Estimated percentage of respondents who report inability to provide required documents as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Documents (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Documents	Delphi/Meta	Estimated percentage of respondents who report inability to provide required documents as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Documents (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Eligibility	Delphi/Meta	Estimated percentage of respondents who report eligibility requirements as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Eligibility (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Eligibility	Delphi/Meta	Estimated percentage of respondents who report eligibility requirements as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Eligibility (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Eligibility	Delphi/Meta	Estimated percentage of respondents who report eligibility requirements as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Eligibility (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Language	Delphi/Meta	Estimated percentage of respondents who report information not being available in their native language as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Language (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Language	Delphi/Meta	Estimated percentage of respondents who report information not being available in their native language as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Language (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Language	Delphi/Meta	Estimated percentage of respondents who report information not being available in their native language as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Language (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: No Appointments	Delphi/Meta	Estimated percentage of respondents who report lack of vaccine or vaccine appointments as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: No Appointments (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): No Appointments	Delphi/Meta	Estimated percentage of respondents who report lack of vaccine or vaccine appointments as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): No Appointments (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): No Appointments	Delphi/Meta	Estimated percentage of respondents who report lack of vaccine or vaccine appointments as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): No Appointments (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: None of Above	Delphi/Meta	Estimated percentage of respondents who report experiencing none of the listed barriers to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: None of Above (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): None of Above	Delphi/Meta	Estimated percentage of respondents who report experiencing none of the listed barriers to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): None of Above (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): None of Above	Delphi/Meta	Estimated percentage of respondents who report experiencing none of the listed barriers to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): None of Above (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Other	Delphi/Meta	Estimated percentage of respondents who report experiencing some other barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Other (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Other	Delphi/Meta	Estimated percentage of respondents who report experiencing some other barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Other (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Other	Delphi/Meta	Estimated percentage of respondents who report experiencing some other barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 12, December 19, 2021.	USA	county (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Other (Unweighted)	Delphi/Meta		USA	county (by Delphi) nation (by Delphi) state (by Delphi)	2021-12-19	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Technical Problems	Delphi/Meta	Estimated percentage of respondents who report technical difficulties with the website or phone line as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Technical Problems (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Technical Problems	Delphi/Meta	Estimated percentage of respondents who report technical difficulties with the website or phone line as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Technical Problems (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Technical Problems	Delphi/Meta	Estimated percentage of respondents who report technical difficulties with the website or phone line as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Technical Problems (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Technology Access	Delphi/Meta	Estimated percentage of respondents who report limited access to internet or phone as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Technology Access (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Technology Access	Delphi/Meta	Estimated percentage of respondents who report limited access to internet or phone as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Technology Access (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Technology Access	Delphi/Meta	Estimated percentage of respondents who report limited access to internet or phone as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Technology Access (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Time Off	Delphi/Meta	Estimated percentage of respondents who report difficulty getting time away from work or school as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Time Off (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Time Off	Delphi/Meta	Estimated percentage of respondents who report difficulty getting time away from work or school as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Time Off (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Time Off	Delphi/Meta	Estimated percentage of respondents who report difficulty getting time away from work or school as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Time Off (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Travel	Delphi/Meta	Estimated percentage of respondents who report difficulty traveling to vaccination sites as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Travel (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Travel	Delphi/Meta	Estimated percentage of respondents who report difficulty traveling to vaccination sites as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Travel (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Travel	Delphi/Meta	Estimated percentage of respondents who report difficulty traveling to vaccination sites as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Travel (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Vaccine Type	Delphi/Meta	Estimated percentage of respondents who report available vaccine type as a barrier to getting the vaccine, among those who have already been vaccinated or have tried to get vaccinated. Based on survey items V15a and V15b. These items were shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier: Vaccine Type (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-06-04	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Vaccine Type	Delphi/Meta	Estimated percentage of respondents who report available vaccine type as a barrier to getting the vaccine, among those who have already been vaccinated. Based on survey item V15a. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Vaccinated): Vaccine Type (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-02-19	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Vaccine Type	Delphi/Meta	Estimated percentage of respondents who report available vaccine type as a barrier to getting the vaccine, among those who have tried to get vaccinated. Based on survey item V15b. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Barrier (Among Unvaccinated): Vaccine Type (Unweighted)	Delphi/Meta		USA	county (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-07-30	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Doctors	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by doctors and other health professionals they go to for medical care, among respondents who have not yet been vaccinated. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Doctors (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Friends	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by friends and family, among respondents who have not yet been vaccinated. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Friends (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Government Health	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by government health officials, among respondents who have not yet been vaccinated. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Government Health (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Local Health	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by local health workers, among respondents who have not yet been vaccinated. Discontinued as of Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-03-16	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Local Health (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-03-16	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Politicians	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by politicians, among respondents who have not yet been vaccinated. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: Politicians (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: WHO	Delphi/Meta	Estimated percentage of respondents who would be more likely to get a COVID-19 vaccine if it were recommended to them by the World Health Organization, among respondents who have not yet been vaccinated. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Vaccine Likely: WHO (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-12-20	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Education	Delphi/Meta	Estimated percentage of people who want more information about how to support their children’s education. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Education (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: COVID Treatment	Delphi/Meta	Estimated percentage of people who want more information about the treatment of COVID-19. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: COVID Treatment (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: COVID Variants	Delphi/Meta	Estimated percentage of people who want more information about COVID-19 variants and mutations. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: COVID Variants (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Employment	Delphi/Meta	Estimated percentage of people who want more information about employment and other economic and financial issues. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Employment (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Mental Health	Delphi/Meta	Estimated percentage of people who want more information about how to maintain their mental health. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Mental Health (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: None of Above	Delphi/Meta	Estimated percentage of people who want more information about none of the listed topics. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: None of Above (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Relationships	Delphi/Meta	Estimated percentage of people who want more information about how to maintain their social relationships despite physical distancing. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Relationships (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Vaccine Access	Delphi/Meta	Estimated percentage of people who want more information about how to get a COVID-19 vaccine. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Vaccine Access (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Vaccine Types	Delphi/Meta	Estimated percentage of people who want more information about different types of COVID-19 vaccines. Based on survey item I7. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Want Information: Vaccine Types (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Wanted Test (Last 14 Days)	Delphi/Meta	Estimated percentage of people who wanted to be tested for COVID-19 in the past 14 days, out of people who were not tested in that time. Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Wanted Test (Last 14 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
People Wearing Masks (Last 5 Days)	Delphi/Meta	Estimated percentage of people who wore a mask for most or all of the time while in public in the past 5 days; those not in public in the past 5 days are not counted. Discontinued as of Wave 8, February 8, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-02-22	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
People Wearing Masks (Last 5 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-02-22	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
People Wearing Masks (Last 7 Days)	Delphi/Meta	Estimated percentage of people who wore a mask for most or all of the time while in public in the past 7 days; those not in public in the past 7 days are not counted. We also ask them if they wear a mask when they are in public. For this signal, we estimate the percentage of people who say they wear a mask most or all of the time when they are in public. This item was shown to respondents starting in Wave 8, February 8, 2021, replacing a 5-day version of the same question.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
People Wearing Masks (Last 7 Days) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-02-09	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Work Outside Home (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who worked or went to school outside their home in the past 24 hours. This item was shown to respondents starting in Wave 4, September 8, 2020. Discontinued as of Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Work Outside Home (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-03-18	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Work Outside Home Indoors (Last 24 Hours)	Delphi/Meta	Estimated percentage of respondents who worked or went to school outside their home in an indoor setting in the past 24 hours. This item was shown to respondents starting in Wave 10, March 2, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Work Outside Home Indoors (Last 24 Hours) (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-03-02	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Become Ill	Delphi/Meta	Estimated percentage of respondents who reported feeling very or somewhat worried that "you or someone in your immediate family might become seriously ill from COVID-19". Discontinued as of Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Become Ill (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2021-08-08	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried About Catching COVID	Delphi/Meta	Estimated percentage of respondents worrying either a great deal or a moderate amount about catching COVID-19. Based on survey item G1. This item was shown to respondents starting in Wave 11, May 19, 2021.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried About Catching COVID (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-05-20	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Finances	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Finances (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-09-08	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Vaccine Side Effects	Delphi/Meta	Estimated percentage of respondents who are very or moderately concerned that they would "experience a side effect from a COVID-19 vaccination." Note: Until Wave 10, March 2, 2021, all respondents answered this question, including those who had already received one or more doses of a COVID-19 vaccine; beginning on that date, only respondents who said they have not received a COVID vaccine are asked this question.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-13	2022-06-25	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
Worried Vaccine Side Effects (Unweighted)	Delphi/Meta		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2021-01-13	2022-06-27	day	daily	1 day	Daily, for 5 consecutive issues for each report date	Adult Facebook users	Covid	population	Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5)	CC BY Aggregationed signals must be based on 100 or more survey responses. Delphi aggregated data has no use restrictions. Raw data users must sign DUA with Delphi, and the proposed research purpose must be consistent with the consent language used in Wave 1, regardless of which survey wave the data they're using comes from. Part- or full-time Facebook employees are not eligible to receive data access.
COVID-Related Searches	Google	Google search volume for COVID-related searches, in arbitrary units that are normalized for population Discontinued March 8, 2021.	USA	hrr (by Delphi) msa (by Delphi) state (by Delphi) dma	2020-02-01	2021-03-04	day	daily	4-5 days	None	Google search users	Covid	population	Data is available for all states.	Google Terms of Service (https://policies.google.com/terms) See license
COVID-Related Searches (Gaussian smoothed)	Google	Google search volume for COVID-related searches, in arbitrary units that are normalized for population, smoothed in time using a Gaussian linear smoother. Discontinued March 8, 2021.	USA	hrr (by Delphi) msa (by Delphi) state (by Delphi) dma	2020-02-01	2021-03-04	day	daily	4-5 days	None	Google search users	Covid	population	Data is available for all states.	Google Terms of Service (https://policies.google.com/terms) See license
COVID-Like Illness	Google	Estimated percentage of people who know someone in their community with COVID-like illness. Discontinued May 16, 2020.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) state (by Delphi)	2020-04-11	2020-05-14	day	daily	1-2 days	Daily, for 3 consecutive issues for each report date	Google ad publisher website Google's Opinions Reward app and similar application users	Covid	symptomatic	Data is available for about 20% of counties Data is available for all states.	CC BY NA
COVID-Like Illness (7-day average)	Google		USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) state (by Delphi)	2020-04-11	2020-05-14	day	daily	1-2 days	Daily, for 3 consecutive issues for each report date	Google ad publisher website Google's Opinions Reward app and similar application users	Covid	symptomatic	Data is available for about 20% of counties Data is available for all states.	CC BY NA
Ageusia Searches	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-13	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Ageusia Searches (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Anosmia Searches	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-13	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Anosmia Searches (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Cough, Phlegm, Sputum, Upper respiratory tract infection	Google	The average relative frequency of searches for Cough, Phlegm, Sputum, and Upper respiratory tract infection, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Cough, Phlegm, Sputum, Upper respiratory tract infection (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Nasal congestion, Post nasal drip, Rhinorrhea, Sinusitis, Rhinitis, Common cold	Google	The average relative frequency of searches for Nasal congestion, Post nasal drip, Rhinorrhea, Sinusitis, Rhinitis, and Common cold, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 65% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Nasal congestion, Post nasal drip, Rhinorrhea, Sinusitis, Rhinitis, Common cold (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 65% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Fever, Hyperthermia, Chills, Shivering, Low grade fever	Google	The average relative frequency of searches for Fever, Hyperthermia, Chills, Shivering, and Low grade fever, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Fever, Hyperthermia, Chills, Shivering, Low grade fever (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 50% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Shortness of breath, Wheeze, Croup, Pneumonia, Asthma, Crackles, Acute bronchitis, Bronchitis	Google	The average relative frequency of searches for Shortness of breath, Wheeze, Croup, Pneumonia, Asthma, Crackles, Acute bronchitis, and Bronchitis, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 30% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Shortness of breath, Wheeze, Croup, Pneumonia, Asthma, Crackles, Acute bronchitis, Bronchitis (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 30% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Anosmia, Dysgeusia, Ageusia	Google	The average relative frequency of searches for Anosmia, Dysgeusia, and Ageusia, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 90% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Anosmia, Dysgeusia, Ageusia (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 90% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Laryngitis, Sore throat, Throat irritation	Google	The average relative frequency of searches for Laryngitis, Sore throat, and Throat irritation, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set showed positive correlation with cases, especially after Omicron was declared a variant of concern by the WHO.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 30% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Laryngitis, Sore throat, Throat irritation (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 30% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Type 2 diabetes, Urinary tract infection, Hair loss, Candidiasis, Weight gain	Google	The average relative frequency of searches for Type 2 diabetes, Urinary tract infection, Hair loss, Candidiasis, and Weight gain, in arbitrary units that are normalized against overall search patterns within each region. The symptoms in this set are not COVID-19 related. This signal is intended to be used as a negative control.	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-14	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 45% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Searches for: Type 2 diabetes, Urinary tract infection, Hair loss, Candidiasis, Weight gain (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	Ongoing	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 45% of counties. Data is available for all states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Sum Anosmia Ageusia Searches	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-13	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Sum Anosmia Ageusia Searches (7-day average)	Google		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state	2020-02-20	2022-01-20	day	daily	4-7 days	None	Google search users	Covid	symptomatic	Data is available for about 3-4% of counties. Data is available for about 85% of states. Signals associated with rarer symptoms (e.g. ageusia) will tend to have fewer locations available, due to upstream privacy censoring. Locations with lower populations will tend to be less available for the same reason	Google Terms of Service (https://policies.google.com/terms) See license
Confirmed COVID-19 Admissions per day	U.S. Department of Health & Human Services	The U.S. Department of Health & Human Services (HHS) receives reports from hospital systems on their capacity and admissions. This signal reports the number of adult and pediatric hospital admissions with confirmed COVID-19 occurring each day	USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed COVID-19 Admissions per day (per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed COVID-19 Admissions per day (7-day average)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed COVID-19 Admissions per day (7-day average, per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed Influenza Admissions per day	U.S. Department of Health & Human Services	The U.S. Department of Health & Human Services (HHS) receives reports from hospital systems on their capacity and admissions. This signal reports the number of adult and pediatric hospital admissions with confirmed influenza occurring each day	USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Flu	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed Influenza Admissions per day (7-day average)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Flu	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed Influenza Admissions per day (per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Flu	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed Influenza Admissions per day (7-day average, per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Flu	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed and Suspected COVID-19 Admissions per day	U.S. Department of Health & Human Services	The U.S. Department of Health & Human Services (HHS) receives reports from hospital systems on their capacity and admissions. This signal reports the number of adult and pediatric hospital admissions with suspected COVID-19 occurring each day	USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed and Suspected COVID-19 Admissions per day (per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2019-12-31	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed and Suspected COVID-19 Admissions per day (7-day average)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
Confirmed and Suspected COVID-19 Admissions per day (7-day average, per 100k people)	U.S. Department of Health & Human Services		USA	hhs (by Delphi) nation (by Delphi) state	2020-01-06	Ongoing	day	weekly	5-11 days	Monthly. Backfill is relatively uncommon in this dataset (80% of dates from November 1, 2020 onward are never touched after their first issue) and most such updates occur one to two weeks after information about a date is first published. In rare instances, a value may be updated 10 weeks or more after it is first published.		Covid	hospitalized	Data is available for all states and some territories.	Public Domain US Government (https://www.usa.gov/government-works) See license
COVID-19 Admissions (EMR and Claims)	Optum	Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on counts of electronic medical records and claims from health system partners, smoothed in time using a Gaussian linear smoother. Discontinued October 1, 2020.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) state (by Delphi)	2020-02-01	2020-09-27	day	daily	3-4 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 7-13 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 57 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	hospitalized	Data is available for about 35% of counties Data is available for all states.	CC BY See license. DUA uses generic contract terms.
COVID-19 Admissions (EMR and Claims) (Day-adjusted)	Optum	Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on counts of electronic medical records and claims from health system partners, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects. Discontinued October 1, 2020.	USA	county (by Delphi) hrr (by Delphi) msa (by Delphi) state (by Delphi)	2020-02-01	2020-09-27	day	daily	3-4 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 7-13 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 57 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	hospitalized	Data is available for about 35% of counties Data is available for all states.	CC BY See license. DUA uses generic contract terms.
COVID-19 Admissions (Claims)	Optum	Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on counts of claims from health system partners, smoothed in time using a Gaussian linear smoother.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	3-4 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 7-13 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 57 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	hospitalized	Data is available for about 35% of counties Data is available for all states.	CC BY See license. DUA uses generic contract terms.
COVID-19 Admissions (Claims) (Day-adjusted)	Optum	Estimated percentage of new hospital admissions with COVID-associated diagnoses, based on counts of claims from health system partners, smoothed in time using a Gaussian linear smoother, and adjusted to reduce day-of-week effects.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	Ongoing	day	daily	3-4 days	Daily. The source experiences heavy backfill with data delayed for a couple of weeks. We expect estimates available for the most recent 7-13 days to change substantially in later data revisions (having a median delta of 10% or more). Estimates for dates more than 57 days in the past are expected to remain fairly static (having a median delta of 1% or less), as most major revisions have already occurred.	nationwide Optum network	Covid	hospitalized	Data is available for about 35% of counties Data is available for all states.	CC BY See license. DUA uses generic contract terms.
Confirmed COVID Cases (Cumulative)	Delphi	Confirmed COVID-19 cases as reported by [USAFacts](https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/) and [JHU-CSSE](https://github.com/CSSEGISandData/COVID-19)	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Daily new, 7-day average)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Daily new, 7-day average, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Cumulative, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Daily new)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Daily new, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Cumulative)	Delphi	Confirmed COVID-19 deaths as reported by [USAFacts](https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/) and [JHU-CSSE](https://github.com/CSSEGISandData/COVID-19)	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Daily new, 7-day average)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Daily new, 7-day average, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Cumulative, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Daily new)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
Confirmed COVID Deaths (Daily new, per 100k people)	Delphi		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2021-11-12	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY NA
NMF Combination (with community symptoms)	Delphi	This signal uses a rank-1 approximation, from a nonnegative matrix factorization approach, to identify an underlying signal that best reconstructs the Doctor Visits (smoothed_adj_cli), Facebook Symptoms surveys (smoothed_cli), Facebook Symptoms in Community surveys (smoothed_hh_cmnty_cli), and Search Trends (smoothed_search) indicators. It does not include official reports (cases and deaths from the jhu-csse source). Higher values of the combined signal correspond to higher values of the other indicators, but the scale (units) of the combination is arbitrary. Note that the Search Trends source is not available at the county level, so county values of this signal do not use it. Discontinued March 17, 2021.	USA	county (by Delphi) msa (by Delphi) state (by Delphi)	2020-04-15	2021-03-16	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	infected	Data is available for about 80% of counties Data is available for all states and some territories.	CC BY NA
NMF Combination (without community symptoms)	Delphi	This signal uses a rank-1 approximation, from a nonnegative matrix factorization approach, to identify an underlying signal that best reconstructs the Doctor Visits (doctor-visits:smoothed_cli), Facebook Symptoms surveys (fb-surveys:smoothed_cli), and Search Trends (ght:smoothed_search) indicators. It does not include official reports (cases and deaths from the jhu-csse source). Higher values of the combined signal correspond to higher values of the other indicators, but the scale (units) of the combination is arbitrary. Note that the Search Trends source is not available at the county level, so county values of this signal do not use it. Discontinued May 28, 2020.	USA	county (by Delphi) msa (by Delphi) state (by Delphi)	2020-04-06	2020-05-26	day	daily	1-3 days	Daily	This source is a combination of several signals representing different populations and doesn't correspond to a single demographic group	Covid	infected	Data is available for about 70% of counties Data is available for all states and some territories.	CC BY NA
Confirmed COVID Cases (Cumulative)	Johns Hopkins University	Confirmed COVID-19 cases as reported by [JHU-CSSE](https://github.com/CSSEGISandData/COVID-19)	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Cases (Daily new, 7-day average)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Cases (Daily new, 7-day average, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Cases (Cumulative, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Cases (Daily new)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Cases (Daily new, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Cumulative)	Johns Hopkins University	Confirmed COVID-19 deaths as reported by [JHU-CSSE](https://github.com/CSSEGISandData/COVID-19)	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Daily new, 7-day average)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Daily new, 7-day average, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-20	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Cumulative, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Daily new)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
Confirmed COVID Deaths (Daily new, per 100k people)	Johns Hopkins University		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-22	2023-03-09	day	daily	1 day	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY See license
All Causes Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths from all causes. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		N/A	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
All Causes Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths from all causes, per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		N/A	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
COVID and Pneumonia excl. Influenza Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths involving COVID-19 and Pneumonia, excluding Influenza . National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid Pneumonia	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
COVID and Pneumonia excl. Influenza Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths involving COVID-19 and Pneumonia, excluding Influenza, per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Confirmed or Presumed COVID Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths with confirmed or presumed COVID-19 . National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Confirmed or Presumed COVID Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths with confirmed or presumed COVID-19, per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Influenza Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths involving Influenza and at least one of (Pneumonia, COVID-19). National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Flu	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Influenza Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths involving Influenza and at least one of (Pneumonia, COVID-19), per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Flu	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Percentage of Expected Deaths	National Center for Health Statistics	Weekly new deaths for all causes in 2020 as a percentage of the average number across the same week in 2017-2019.. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		N/A	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Pneumonia excl. Influenza Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths involving Pneumonia, excluding Influenza deaths . National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Pneumonia	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
Pneumonia excl. Influenza Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths involving Pneumonia, excluding Influenza deaths, per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Pneumonia	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
COVID, Pneumonia or Influenza Deaths (Weekly new)	National Center for Health Statistics	Number of weekly new deaths involving Pneumonia, Influenza, or COVID-19 . National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid Flu Pneumonia	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
COVID, Pneumonia or Influenza Deaths (Weekly new, per 100k people)	National Center for Health Statistics	Number of weekly new deaths involving Pneumonia, Influenza, or COVID-19, per 100k people. National provisional death counts is based on death certificate data received and coded by the National Center for Health Statistics ([NCHS](https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm))	USA	nation state	2020-05	Ongoing	week	weekly	11-17 days	Weekly. All-cause mortality takes ~6 weeks on average to achieve 99% of its final value (https://link.springer.com/article/10.1057/s41271-021-00309-7)		Covid Flu Pneumonia	dead	Data is available for all states and some territories.	NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) See license
COVID-19 Antigen Tests: Percent Positive	Quidel	When a patient (whether at a doctor's office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 7% of counties, half that on weekends. Data is available for about 90% of states, about 70% on weekends	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive (7-day average)	Quidel		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 50% of counties, and all or nearly all states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 0-17	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 0-17	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 0-17 (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 0-17, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 0-4	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 0-4	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 0-4 (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 0-4, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 18-49	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 18-49	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 18-49 (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 18-49, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 5-17	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 5-17	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 5-17 (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 5-17, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 50-64	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 50-64	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 50-64 (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 50-64, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 65+	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 65 and above	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 0.7-2% of counties, half that on weekends. Data is available for about 30-45% of states, half that on weekends. Geographic coverage for smaller age groups (age 0-4 and age 65+) are also extremely limited at the HRR and MSA levels	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
COVID-19 Antigen Tests: Percent Positive, Ages 65+ (Smoothed)	Quidel	When a patient (whether at a doctor’s office, clinic, or hospital) has COVID-like symptoms, doctors may order an antigen test. An antigen test can detect parts of the virus that are present during an active infection. This is in contrast with antibody tests, which detect parts of the immune system that react to the virus, but which persist long after the infection has passed. For this signal, we compute the percentage of antigen tests performed that were positive for COVID-19 among people ages 65 and above, smoothed using a 7-day moving average and geographical pooling	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-05-26	Ongoing	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Covid	ascertained (case)	Data is available for about 5-15% of counties. Data is available for about 65-95% of states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
Flu Tests: Percent Negative	Quidel	The percentage of flu tests that are negative, suggesting the patient's illness has another cause, possibly COVID-19 . Discontinued May 19, 2020.	USA	msa (by Delphi) state (by Delphi)	2020-01-31	2020-05-10	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Flu	population	Data is available for about 7% of counties, half that on weekends. Data is available for about 90% of states, about 70% on weekends	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
Flu Tests: Percent Negative (7-day average)	Quidel		USA	msa (by Delphi) state (by Delphi)	2020-01-31	2020-05-10	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Flu	population	Data is available for about 50% of counties, and all or nearly all states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
Flu Tests: Tests Per Device	Quidel	The average number of flu tests conducted by each testing device; measures volume of testing . Discontinued May 19, 2020.	USA	msa (by Delphi) state (by Delphi)	2020-01-31	2020-05-10	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Flu	population	Data is available for about 7% of counties, half that on weekends. Data is available for about 90% of states, about 70% on weekends	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
Flu Tests: Tests Per Device (7-day average)	Quidel		USA	msa (by Delphi) state (by Delphi)	2020-01-31	2020-05-10	day	daily	5-6 days	Daily. Happens up to 6+ weeks after the report date. Revised values vary -3.5 to 1.8% around the final value for a given date and location.	Nationwide Quidel testing equipment network	Flu	population	Data is available for about 50% of counties, and all or nearly all states.	CC BY Quidel provides Delphi data solely for internal research use and non-commercial research and analytics purposes for developing models for forecasting influenza-like epidemics and pandemics (CC BY).
Completely Home	SafeGraph	The fraction of mobile devices that did not leave the immediate area of their home. This is SafeGraph’s completely_home_device_count / device_count. Discontinued April 19th, 2021.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Completely Home (7-day average)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Full Time Work/School	SafeGraph	The fraction of mobile devices that spent more than 6 hours at one location other than their home during the daytime. This is SafeGraph’s full_time_work_behavior_devices / device_count. Discontinued April 19th, 2021.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Full Time Work/School (7-day average)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Median Home Dwell Time	SafeGraph	The median time spent at home for all devices at this location for this time period, in minutes. Discontinued April 19th, 2021.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Median Home Dwell Time (7-day average)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Part Time Work/School	SafeGraph	The fraction of devices that spent between 3 and 6 hours at one location other than their home during the daytime. This is SafeGraph’s part_time_work_behavior_devices / device_count. Discontinued April 19th, 2021.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Part Time Work/School (7-day average)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2021-04-16	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Bar Visits	SafeGraph	Delphi receives data from [SafeGraph](https://docs.safegraph.com/docs/weekly-patterns), which collects weekly insights on Points of Interest (POI) using anonymized location data from mobile phones. We select locations that qualify as "Drinking Places (alcoholic beverages)" from all the [core places](https://docs.safegraph.com/v4.0/docs/places-manual#section-core-places), then count the number of visits. Note that these counts only include people whose visits are tracked because they are in SafeGraph's panel; they do not include all bar visits by everyone in the population.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2022-05-01	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for about 10% of counties. Data is available for about 90% of states	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Bar Visits (per 100k people)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2022-05-01	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for about 10% of counties. Data is available for about 90% of states	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Restaurant Visits	SafeGraph	Delphi receives data from [SafeGraph](https://docs.safegraph.com/docs/weekly-patterns), which collects weekly insights on Points of Interest (POI) using anonymized location data from mobile phones. We select locations that qualify as "Full-Service Restaurants" from all the [core places](https://docs.safegraph.com/v4.0/docs/places-manual#section-core-places), then count the number of visits. Note that these counts only include people whose visits are tracked because they are in SafeGraph's panel; they do not include all restaurant visits by everyone in the population.	USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2022-05-01	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for about 80% of counties Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Restaurant Visits (per 100k people)	SafeGraph		USA	county (by Delphi) hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2019-01-01	2022-05-01	day	weekly	3-11 days	None	Safegraph panel members who use mobile devices	N/A	population	Data is available for about 80% of counties Data is available for all states and some territories.	CC BY Delphi is free to publish and otherwise disclose the results of its Research (including but not limited to reports and papers and other activities conducted under the Research), including analyses and/or aggregated reporting of the Data. However, the underlying raw Data may not be published without Licensor’s consent.
Confirmed COVID Cases (Cumulative)	USAFacts	Confirmed COVID-19 cases as reported by [USAFacts](https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/)	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Cases (Daily new, 7-day average)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Cases (Daily new, 7-day average, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Cases (Cumulative, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Cases (Daily new)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Cases (Daily new, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	ascertained (case)	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Cumulative)	USAFacts	Confirmed COVID-19 deaths as reported by [USAFacts](https://usafacts.org/visualizations/coronavirus-covid-19-spread-map/)	USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Daily new, 7-day average)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Daily new, 7-day average, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-02-01	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Cumulative, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Daily new)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
Confirmed COVID Deaths (Daily new, per 100k people)	USAFacts		USA	county hhs (by Delphi) hrr (by Delphi) msa (by Delphi) nation (by Delphi) state (by Delphi)	2020-01-25	2023-01-02	day	weekly	2-8 days	None. The raw data reports cumulative cases and deaths, which Delphi diffs to compute incidence. Raw cumulative figures are sometimes corrected by adjusting the reported value for a single day, but revisions do not affect past report dates.		Covid	dead	Data is available for all counties and some territorial county equivalents. Data is available for all states.	CC BY See license
COVID Emergency Department Visits (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	Percent of ED visits that had a discharge diagnosis code of COVID-19	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Covid	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
Influenza Emergency Department Visits (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	Percent of ED visits that had a discharge diagnosis code of influenza	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Flu	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
COVID Emergency Department Visits (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	Percent of ED visits that had a discharge diagnosis code of rsv	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Rsv	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
Emergency Department Visits for COVID, Influenza, and RSV Combined (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	Percent of ED visits that had a discharge diagnosis code of COVID-19, influenza, or rsv	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Covid Flu Rsv	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
COVID Emergency Department Visits (Percent of total ED visits, 3-week average)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	3-week moving average of percent of ED visits that had a discharge diagnosis code of COVID-19	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Covid	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
Influenza Emergency Department Visits (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	3-week moving average of percent of ED visits that had a discharge diagnosis code of influenza	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Flu	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
COVID Emergency Department Visits (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	3-week moving average of percent of ED visits that had a discharge diagnosis code of rsv	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Rsv	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None
Emergency Department Visits for COVID, Influenza, and RSV Combined (Percent of total ED visits)	Centers for Disease Control and Prevention National Syndromic Surveillance Program	3-week moving average of percent of ED visits that had a discharge diagnosis code of COVID-19, influenza, or rsv	USA	county hrr (by Delphi) msa (by Delphi) state	2022-10-01	ongoing	week	weekly				Covid Flu Rsv	hospitalized	Data is available for 78% of US emergency departments. California, Colorado, Missouri, Oklahoma, and Virginia have the most noticeable gaps in coverage, with many counties in those states having either no eligible EDs or having no recently reported data in NSSP. However, most states have some counties that do not contain any reporting EDs. NSSP does not report county-level data for all counties with reporting EDs; some reporting EDs are only included in state-level values. The following states report no data through NSSP at the county level: CA, WA, AK, AZ, AL, CO, SD, ND, MO, AR, FL, OH, NH, CT, NJ. South Dakota, Missouri, and territories report no data through NSSP at the state level.	None

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