| Name | Pathogen(s) Syndrome(s) |
Geographic Scope | Geographic Granularity | Temporal scope Start | Temporal Scope End | Temporal Granularity | Reporting Cadence | Reporting Lag(nominal) | Revision Cadence | Demographic scope | Demographic Granularity | Severity Pyramid Rung(s) | Data Source | Pre-processing | Censoring | Missingness | DUA required | License | Documentation | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CDC Website Hits | ILI | United States | ADM 1; HHS; CR; National | 2013w02 | 2020w03 | Weekly | Weekly | 2 days | None | All (ie all groups) | N/A | Symptomatic | US DHHS/CDC | None | Yes | Permission by CDC flu division | https://cmu-delphi.github.io/delphi-epidata/api/cdc.html | |||
| Change Healthcare COVID-Confirmed Doctor Visits | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | 2024-02-19 | Daily | Daily | 4-5 days | Daily | All (ie all groups) | N/A | Outpatient (including ED) | Change Healthcare | Time-smoothing using a Gaussian linear smoother by Delphi. Day-of-week adjustment by Delphi. Geo-aggregation by Delphi. | Discarded if over a given 7-day period an estimate is computed with 100 or fewer observations | Data is available for nearly all (99%) of counties. Data is available for all states and some territories. | No | CC BY-NC | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/chng.html | |
| Change Healthcare COVID-Confirmed Hospital Admissions | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | Change Healthcare | ||||||||||||||||
| Change Healthcare COVID-Related Doctor Visits | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | 2024-02-19 | Daily | Daily | 4-5 days | Daily | All (ie all groups) | N/A | Outpatient (including ED) | Change Healthcare | Time-smoothing using a Gaussian linear smoother by Delphi. Day-of-week adjustment by Delphi. Geo-aggregation by Delphi. | Discarded if over a given 7-day period an estimate is computed with 100 or fewer observations | Data is available for nearly all (99%) of counties. Data is available for all states and some territories. | No | CC BY-NC | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/chng.html | |
| Change Healthcare Influenza-Confirmed Doctor Visits | Influenza | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | 2024-02-19 | Daily | Daily | 4-5 days | Daily | All (ie all groups) | N/A | Outpatient (including ED) | Change Healthcare | Time-smoothing using a Gaussian linear smoother by Delphi. Day-of-week adjustment by Delphi. Geo-aggregation by Delphi. | Discarded if over a given 7-day period an estimate is computed with 100 or fewer observations | Data is available for nearly all (99%) of counties. Data is available for all states and some territories. | No | CC BY-NC | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/chng.html | |
| Community Profile Report Confirmed COVID-19 Hospital Admissions | COVID-19 | United States | ADM 1; HHS; National | 2020-12-16 | 2023-02-22 | Daily | Daily | 3-9 days | None | All (ie all groups) | N/A | Inpatient | US WH DSEW-CPR | 7day averaging by Delphi. Geo-aggregation by Delphi. | None | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Community Profile Report COVID-19 Booster Doses | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | 2021-11-01 | 2023-02-22 | Daily | Daily | 3-9 days | None | All (ie all groups) | N/A | Population | US WH DSEW-CPR | Time-smoothing by Delphi. Geo-aggregation by Delphi. | None | Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Community Profile Report COVID-19 Booster Recipients | COVID-19 | United States | ADM 1; HHS; National | 2021-11-01 | 2023-02-22 | Daily | Daily | 3-9 days | None | All (ie all groups) | N/A | Population | US WH DSEW-CPR | 7day averaging by Delphi. Geo-aggregation by Delphi. | None | Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Community Profile Report COVID-19 Test Positivity | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | 2021-11-01 | 2023-02-22 | Daily | Daily | 3-9 days | Almost daily | All (ie all groups) | N/A | Population | US WH DSEW-CPR | Time-smoothing by Delphi. Geo-aggregation by Delphi. | None | Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Community Profile Report COVID-19 Vaccine Doses | COVID-19 | United States | ADM 1; HHS; National | 2021-05-02 | 2023-02-22 | Daily | Daily | 3-9 days | None | All (ie all groups) | N/A | Population | US WH DSEW-CPR | 7day averaging by Delphi. Geo-aggregation by Delphi. | None | Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Community Profile Report COVID-19 Vaccine Recipients | COVID-19 | United States | ADM 1; HHS; National | 2021-01-15 | 2023-02-22 | Daily | Daily | 3-9 days | None | All (ie all groups) | N/A | Population | US WH DSEW-CPR | 7day averaging by Delphi. Geo-aggregation by Delphi. | None | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | Publicly Accessible US Government (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/dsew-cpr.html | |
| Covid Act Now COVID-19 PCR Test Positivity Rate | COVID-19 | United States | ADM 2; MSA; ADM 1; HHS; National | 2020-03-01 | 2021-12-02 | Daily | Daily | 2-9 days | Usually daily | All (ie all groups) | N/A | Ascertained | COVID Act Now | Discarded if sample size (total tests performed) is 0 | 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. | No | CC BY-NC | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/covid-act-now.html | ||
| Covid Act Now COVID-19 PCR Tests | COVID-19 | United States | ADM 2; MSA; ADM 1; HHS; National | 2020-03-01 | 2021-12-02 | Daily | Daily | 2-9 days | Usually daily | All (ie all groups) | N/A | Ascertained | COVID Act Now | Discarded if sample size (total tests performed) is 0 | 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. | No | CC BY-NC | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/covid-act-now.html | ||
| COVID-19 Burden Composite | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-04-06 | 2021-03-16 | Daily | Daily | 1-3 days | Almost daily | All (ie all groups) | N/A | Symptomatic | delphi | Extensive processing, see documentation | None. However underlying signals may perform their own censoring | Data is available for about 80% of counties Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/indicator-combination.html | |
| COVID-19 Hospital Admissions from Claims | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | Ongoing | Daily | Daily | 3-4 days | Daily | All (ie all groups) | N/A | Inpatient | Health system partners | time-smoothing by Delphi, with and without day-of-week adjustment by Delphi | Discarded if over a given 7-day period an estimate is computed with 500 or fewer observations | Data is available for about 35% of counties Data is available for all states. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hospital-admissions.html | |
| COVID-19 Hospital Admissions from claims + EMR | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | 2020-09-27 | Daily | Daily | 3-4 days | Daily | All (ie all groups) | N/A | Inpatient | Health system partners | time-smoothing by Delphi, with and without day-of-week adjustment by Delphi | Discarded if over a given 7-day period an estimate is computed with 500 or fewer observations | Data is available for about 35% of counties Data is available for all states. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hospital-admissions.html | |
| COVID-Related Doctor Visits | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | Ongoing | Daily | Daily | 3-6 days | Daily | All (ie all groups) | N/A | Outpatient (including ED) | Health system partners | Time-smoothing using a Gaussian linear smoother by Delphi. Day-of-week adjustment by Delphi. Geo-aggregation by Delphi. | Discarded if over a given 7-day period an estimate is computed with 500 or fewer observations | Data is available for about 80% of counties Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/doctor-visits.html | |
| CTIS: Behavior Indicators | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Population | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| CTIS: Belief, Experience, and Information Indicators | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1 | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Population | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| CTIS: ILI and CLI Indicators | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Symptomatic | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| CTIS: Mental Health Indicators | n/a | United States | HRR; MSA; DMA; ADM 1 | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Population | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| CTIS: Testing Indicators | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Tested | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| CTIS: Vaccination Indicators | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; National | Varies by indicator - 2020-2021 | 2022-06-25 | Daily | Daily | 1 day | Daily | All (ie all groups) | N/A | Vaccinated | Delphi survey hosted by Facebook | population weighting by Delphi, with and without 7 day rolling by Delphi | Discarded if an estimate is based on fewer than 100 survey responses. | Geographic coverage varies widely by signal, with anywhere from 0.4% to 25% of counties available and 15% to 100% of states. A handful of signals are available for 40-50% of counties, and all states and some territories. Signals based on questions that were asked to a subset of survey respondents are available for fewer locations. Availability declines over time as survey response rate decreases. A missing value indicates no valid data OR, for test positivity, that the value was censored due to small sample size (<= 5) | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/fb-survey.html | |
| Delphi Dengue Nowcasts | Dengue | North and South America | National | 2014w09 | 2020w32 | Weekly | unknown | unknown | Weekly | All (ie all groups) | N/A | Ascertained | delphi | Sensor fusion model | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/dengue_nowcast.html | |||
| Delphi Dengue Sensors | Dengue | North and South America | National | 2014w04 | 2020w32 | Weekly | unknown | unknown | Weekly | All (ie all groups) | N/A | Ascertained | delphi | Sensors are fit to estimate a target surveillance stream from individual data sources or models | Sensor-dependent | Sensor-dependent | https://cmu-delphi.github.io/delphi-epidata/api/dengue_sensors.html | |||
| Delphi ILI Sensors | ILI | United States | ADM 1; HHS; CR; National | 2010w40 | 2022w36 | Weekly | unknown | -1 to 1 day | unknown | All (ie all groups) | N/A | Outpatient (including ED) | delphi | Sensors are fit to estimate the target (%wILI) from individual data sources or models. | Sensor-dependent | Sensor-dependent | David Farrow's PhD thesis (https://www.cmu.edu/delphi-web/publications/dfarrow-thesis.pdf), section 4.3 | |||
| Delphi ILI-Nearby Nowcasts | ILI | United States | ADM 1; HHS; CR; National | 2010w45 | 2022w36 | Weekly | Weekly | {-1, 1} day | Weekly (x2) | All (ie all groups) | N/A | Outpatient (including ED) | delphi | Sensor fusion model | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/nowcast.html | |||
| Delphi ILINet Forecasts | ILI | United States | ADM 1; HHS; National | 2014w41 | 2020w19 | Weekly | Weekly | Typically {2, -5, -12, -19} days | Weekly | All (ie all groups) | N/A | Outpatient (including ED) | delphi | Time series model | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/delphi.html | |||
| European ILI | ILI | Europe and Central Asia | National | 2018w40 | 2020w12 | Weekly | unknown | unknown | unknown | All (ie all groups) | N/A | Outpatient (including ED) | European CDC | No | This was scraped from a publicly-accessible website, but no explicit license terms were found. | https://cmu-delphi.github.io/delphi-epidata/api/ecdc_ili.html | ||||
| FluSurv-NET influenza hospitalization rates | Influenza | United States | FluSurv-Net site | 2003w40 | 2020w17 | Weekly | Weekly during flu season (w40-w20) | 6 days | Mostly weekly | All (ie all groups) | All; ages 0-4, 5-17, 18-49, 50-64, 65+ | Inpatient | US DHHS/CDC | FluSurv public reporting starts when season-cumulative admissions in that jurisdiction reach a certain threshold. | Typically available for most of the influenza season (w40-w20) | No | [Publicly Accessible US Government](https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/flusurv.html | ||
| Google COVID-19 Symptoms Searches | COVID-19 ILI | United States | ADM 1; HHS; National | 2020-02-13 with some variation by geography | Ongoing | Daily | Daily | 4-7 days | None | All (ie all groups) | N/A | Symptomatic | with and without 7day smoothed by Delphi | Unavailable when daily volume in a region does not meet quality or privacy thresholds, as set by Google. Google also uses differential privacy, which adds artificial noise to the incoming data | 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 | No | Google Terms of Service (https://policies.google.com/terms) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/google-symptoms.html | ||
| Google Flu Trends (GFT) | ILI | United States | ADM 3; ADM 1; HHS; National | 2003w40 | 2015w32 | Weekly | unknown | 1 day | unknown | All (ie all groups) | N/A | Population | Normalization | Unavailable when daily volume in a region does not meet quality or privacy thresholds, as set by Google. Google also uses differential privacy, which adds artificial noise to the incoming data | No | Google Terms of Service (https://policies.google.com/terms) | https://cmu-delphi.github.io/delphi-epidata/api/gft.html | |||
| Google Health Trends (GHT) COVID-Related Searches | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-02-01 | 2021-03-04 | Daily | Daily | 4-5 days | None | All (ie all groups) | N/A | Population | with and without time-smoothed by Delphi | Reported as 0 query when search volume is below a certain threshold | Data is available for all states. | No | Google Terms of Service (https://policies.google.com/terms) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/ght.html | ||
| Google Health Trends (GHT) ILI-Related Searches | ILI | North and South America | ADM 1; National | 1993w01 | 2022w36 | Weekly | unknown | 1 day | unknown | All (ie all groups) | N/A | Population | Normalization | Unavailable when daily volume in a region does not meet quality or privacy thresholds, as set by Google. Google also uses differential privacy, which adds artificial noise to the incoming data | Yes | Google Terms of Service (https://policies.google.com/terms) | https://cmu-delphi.github.io/delphi-epidata/api/ght.html | |||
| Google Symptom Surveys COVID-Like Illness | COVID-19 | United States | ADM 1 | 2020-04-11 | 2020-05-14 | Daily | Daily | 1-2 days | Daily for 3 days but with minimal changes. | All (ie all groups) | N/A | Symptomatic | Delphi survey hosted by Google | with and without time-smoothed by Delphi | Discarded when an estimate is based on fewer than 100 survey responses | Data is available for about 20% of counties Data is available for all states. | No | Google Terms of Service (https://policies.google.com/terms) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/google-survey.html | |
| HealthTweets ILI Twitter Activity | Influenza | United States | ADM 1; HHS; CR; National | 2011-12-01 | 2020-12-07 | Daily, Weekly | unknown | unknown | unknown | All (ie all groups) | N/A | Symptomatic | No | publicly accessible. Please cite: Mark Dredze, Renyuan Cheng, Michael J Paul, David A Broniatowski. HealthTweets.org: A Platform for Public Health Surveillance using Twitter. AAAI Workshop on the World Wide Web and Public Health Intelligence, 2014. | https://cmu-delphi.github.io/delphi-epidata/api/twitter.html | |||||
| HHS Confirmed COVID-19 Admissions | COVID-19 | United States | ADM 1; HHS; National | 2019-12-31 | 2024-04-30 | Daily | Weekly | 5-11 days | Often twice a week, sometimes almost daily | All (ie all groups) | N/A | Inpatient | US DHHS | None | Data is available for all states and some territories. | No | Publicly Accessible US Government data (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hhs.html | ||
| HHS Confirmed Influenza Admissions | Influenza | United States | Facility | 2019-12-31 | 2024-04-30 | Daily | Weekly | 5-11 days | Often twice a week, sometimes almost daily | All (ie all groups) | N/A | Inpatient | US DHHS | None | Data is available for all states and some territories. | No | Publicly Accessible US Government data (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hhs.html | ||
| HHS COVID-19 Reported Patient Impact and Hospital Capacity by Facility | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1 | 2019w52 | 2024w08 | Weekly | up to twice a week | 11-19 days | Often twice a week, sometimes almost daily | All (ie all groups) | All; adult, pediatric; ages 18-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+ | Inpatient | US DHHS | None by Delphi | None | Data is available for all states and some territories. | No | [Publicly Accessible US Government data](https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covid_hosp_facility.html | |
| HHS COVID-19 Reported Patient Impact and Hospital Capacity by State | COVID-19 | United States | Facility | 2020-01-01 | 2024-04-27 | Daily | usually twice a week | 5-11 days | Often twice a week, sometimes almost daily | All (ie all groups) | All; adult, pediatric; ages 18-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+ | Inpatient | US DHHS | None by Delphi | None | Data is available for all states and some territories. | No | [Publicly Accessible US Government data](https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covid_hosp.html | |
| HHS Suspected or Confirmed COVID-19 Admissions | COVID-19 | United States | ADM 1 | 2019-12-31 | 2024-04-30 | Daily | Weekly | 5-11 days | Often twice a week, sometimes almost daily | All (ie all groups) | N/A | Inpatient | US DHHS | None | Data is available for all states and some territories. | No | Publicly Accessible US Government data (https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/hhs.html | ||
| ILINet | ILI | United States | ADM 1; HHS; CR; National | 1997w40 | Ongoing | Weekly | Weekly during flu season (w40-w20) | 5 days | weekly | All (ie all groups) | All; ages 0-4, 5-24, 25-64, 25-49, 50-64, 65+ | Outpatient (including ED) | US DHHS/CDC | Age breakdown is available only for the numerator (number of ILI-related office visits) | No | [Publicly Accessible US Government](https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/fluview.html | |||
| Influenza-Related Wikipedia Access | ILI | International | N/A | 2007w50 | 2021w11 | Hourly, Daily, Weekly | unknown | unknown | unknown | All (ie all groups) | N/A | Symptomatic | Wikipedia | No | CC BY-SA | https://cmu-delphi.github.io/delphi-epidata/api/wiki.html | ||||
| JHU Confirmed COVID-19 Cases | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-01-22 with some variation by geo | 2023-03-09 | Daily | Daily | 1 day | 2-3 times weekly | All (ie all groups) | N/A | Ascertained | JHU CSSE | incidence, 7day avg, and rates calculation by Delphi | None | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html | |
| JHU Confirmed COVID-19 Deaths | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-01-22 with some variation by geo | 2023-03-09 | Daily | Daily | 1 day | 2-3 times weekly | All (ie all groups) | N/A | Deceased | JHU CSSE | incidence, 7day avg, and rates calculation by Delphi | None | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html | |
| Korean ILI | ILI | South Korea | National | 2004w36 | 2020w44 | Weekly | Weekly | 3 days | None | All (ie all groups) | N/A | Outpatient (including ED) | Korean CDC | No | This was scraped from a publicly-accessible government website, but no explicit license terms were found. | https://cmu-delphi.github.io/delphi-epidata/api/kcdc_ili.html | ||||
| NCHS All Causes Deaths | n/a | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Confirmed or Presumed COVID-19 Deaths | COVID-19 | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Influenza Deaths | Influenza | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Percentage of Expected Deaths | n/a | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | None | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Pneumonia and COVID-19 excl. Influenza Deaths | pneumonia COVID-19 | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Pneumonia excl. Influenza Deaths | pneumonia | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NCHS Pneumonia, COVID-19 or Influenza Deaths | pneumonia COVID-19 Influenza | United States | ADM 1; National | 2020w05 with some variation by geography | Ongoing | Weekly | Weekly | 11-17 days | Weekly | All (ie all groups) | N/A | Deceased | US DHHS/CDC/NCHS | calculation of population rates by Delphi. | Unavailable by NCHS when counts are between 1 and 9, and for weeks where the counts are less than 50% of the expected number, since "these provisional counts are highly incomplete and potentially misleading" | Data is available for all states and some territories. | No | NCHS Data Use Agreement (https://www.cdc.gov/nchs/data_access/restrictions.htm) | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nchs-mortality.html | |
| NoroSTAT norovirus outbreaks | Norovirus | United States (NoroSTAT participating states) | National | 2012w31 | 2020w30 | Weekly | Monthly | 3-8 weeks | None | All (ie all groups) | N/A | Ascertained | US DHHS/CDC | No | [Publicly Accessible US Government](https://www.usa.gov/government-works) | https://cmu-delphi.github.io/delphi-epidata/api/norostat.html | ||||
| NSSP COVID-19 Emergency Department Visits | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2022-10-01 | Ongoing | Weekly | Weekly | 7 days | Weekly | All (ie all groups) | N/A | Outpatient (including ED) | US DHSS/CDC/NSSP | 3-week smoothing by NSSP. Geo-aggregation to hrr, msa and hhs-region by Delphi. Geo-aggregation to state and nation by NSSP. | None, though a number of states do not share county level data for unknown reasons | Data is available for all states except SD and MO, and some territories. Many states do not have county-level data. As of May 2024, NSSP received data from 78% of US EDs. | No | Public Domain U.S. Government, https://www.usa.gov/government-works | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nssp.html | |
| NSSP Emergency Department Visits for COVID-19, Influenza, and RSV Combined | COVID-19 Influenza RSV | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2022-10-01 | Ongoing | Weekly | Weekly | 7 days | Weekly | All (ie all groups) | N/A | Outpatient (including ED) | US DHSS/CDC/NSSP | 3-week smoothing by NSSP. Geo-aggregation to hrr, msa and hhs-region by Delphi. Geo-aggregation to state and nation by NSSP. | None, though a number of states do not share county level data for unknown reasons | Data is available for all states and some territories. Many states do not have county-level data. As of May 2024, NSSP received data from 78% of US EDs. | No | Public Domain U.S. Government, https://www.usa.gov/government-works | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nssp.html | |
| NSSP Influenza Emergency Department Visits | Influenza | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2022-10-01 | Ongoing | Weekly | Weekly | 7 days | Weekly | All (ie all groups) | N/A | Outpatient (including ED) | US DHSS/CDC/NSSP | 3-week smoothing by NSSP. Geo-aggregation to hrr, msa and hhs-region by Delphi. Geo-aggregation to state and nation by NSSP. | None, though a number of states do not share county level data for unknown reasons | Data is available for all states and some territories. Many states do not have county-level data. As of May 2024, NSSP received data from 78% of US EDs. | No | Public Domain U.S. Government, https://www.usa.gov/government-works | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nssp.html | |
| NSSP RSV Emergency Department Visits | RSV | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2022-10-01 | Ongoing | Weekly | Weekly | 7 days | Weekly | All (ie all groups) | N/A | Outpatient (including ED) | US DHSS/CDC/NSSP | 3-week smoothing by NSSP. Geo-aggregation to hrr, msa and hhs-region by Delphi. Geo-aggregation to state and nation by NSSP. | None, though a number of states do not share county level data for unknown reasons | Data is available for all states and some territories. Many states do not have county-level data. As of May 2024, NSSP received data from 78% of US EDs. | No | Public Domain U.S. Government, https://www.usa.gov/government-works | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/nssp.html | |
| PAHO Dengue | Dengue | North and South America | National | 2014w01 | 2020w31 | Weekly | Weekly | 6-7 days minimum, varies across jurisdictions and time | None | All (ie all groups) | N/A | Ascertained | PAHO | No | This was scraped from a publicly-accessible website, but no explicit license terms were found. | https://cmu-delphi.github.io/delphi-epidata/api/paho_dengue.html | ||||
| Quidel influenza lab tests (early pandemic period) | Influenza | United States (NoroSTAT participating states) | MSA, ADM 1 | 2020-01-31 | 2020-05-01 | Daily | Daily | 3-11 days | Mostly daily | All (ie all groups) | N/A | Ascertained | Quidel Corp. | With and without temporal smoothing by Delphi. Geo-aggregation by Delphi. | Not reported if based on fewer than 10 tests | Yes | Permission by QuidelOrtho | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/quidel-flu.html | ||
| Quidel influenza lab tests (pre-pandemic) | Influenza | United States (NoroSTAT participating states) | HHS | 2015w35 | 2020w15 | Weekly | Weekly | 1-2 days? | unknown | All (ie all groups) | N/A | Ascertained | Quidel Corp. | Yes | Permission by QuidelOrtho | https://cmu-delphi.github.io/delphi-epidata/api/quidel.html | ||||
| QuidelOrtho COVID-19 lab tests | COVID-19 | United States (NoroSTAT participating states) | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-05-26 | Ongoing | Daily | Daily | 5-7 days | Daily | All (ie all groups) | All; ages 0-4, 5-17, 0-17, 18-49, 50-64, 65+ | Ascertained | QuidelOrtho Corp. | With and without temporal and geographic smoothing by Delphi. Geo-aggregation by Delphi. | Not reported if based on fewer than 30 tests. If total number of tests `n` was between 30 and 50, `50 - n` fake samples equal to the state mean were included in the estimate. | Yes | Permission by QuidelOrtho | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/quidel.html | ||
| Safegraph Home Mobility | n/a | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2019-01-01 | 2021-04-16 | Daily | Daily | 3 days | Annually | All (ie all groups) | N/A | Population | safegraph | Census block aggregation by Delphi. Raw and 7-day averaging by Delphi. Geo-aggregation by Delphi. | None. However, Safegraph uses differential privacy, which adds artificial noise to the incoming data. See https://docs.safegraph.com/docs/social-distancing-metrics for details | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/safegraph.html | |
| Safegraph POI Mobility | n/a | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2019-01-01 | 2022-05-01 | Daily | Weekly | 3-11 days | Annually | All (ie all groups) | N/A | Population | safegraph | POI aggregation by Delphi. Raw and 7-day averaging by Delphi. Geo-aggregation by Delphi. Population rates by Delphi. | None. However, Safegraph uses differential privacy, which adds artificial noise to the incoming data. See https://docs.safegraph.com/docs/social-distancing-metrics for details | Data is available for all counties and some territorial county equivalents. Data is available for all states and some territories. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/safegraph.html | |
| Taiwanese dengue cases | Dengue | Taiwan | ADM 1; National | 2003w01 | 2018w10 | Weekly | unknown | unknown | unknown | All (ie all groups) | N/A | Ascertained | Taiwan CDC | No | https://data.gov.tw/license | https://cmu-delphi.github.io/delphi-epidata/api/nidss_dengue.html | ||||
| Taiwanese ILI | ILI | Taiwan | ADM 1; National | 2008w14 | 2018w10 | Weekly | Weekly | 2-3 days | Mostly weekly | All (ie all groups) | N/A | Outpatient (including ED) | Taiwan CDC | No | https://data.gov.tw/license | https://cmu-delphi.github.io/delphi-epidata/api/nidss_flu.html | ||||
| USA Facts Confirmed COVID-19 Cases | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-01-25 | 2023-01-02 | Daily | Weekly | 2-8 days | Almost daily | All (ie all groups) | N/A | Ascertained | USA Facts | incidence, 7day avg, and rates calculation by Delphi | None | Data is available for all counties and some territorial county equivalents. Data is available for all states. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/usa-facts.html | |
| USA Facts Confirmed COVID-19 Deaths | COVID-19 | United States | ADM 2; HRR; MSA; ADM 1; HHS; National | 2020-01-25 | 2023-01-02 | Daily | Weekly | 2-8 days | Almost daily | All (ie all groups) | N/A | Deceased | USA Facts | incidence, 7day avg, and rates calculation by Delphi | None | Data is available for all counties and some territorial county equivalents. Data is available for all states. | No | CC BY | https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/usa-facts.html |