Delphi Epidata API (Carnegie Mellon University)
Delphi Epidata API (Carnegie Mellon University)
CMU's Delphi group serves real-time epidemiological indicators (COVID-19, flu, hospital admissions, symptom surveys) through its V5 and legacy V4 (COVIDcast) Epidata APIs, keyless for anonymous use. The intro page says: "Delphi's Epidata API provides real-time access to epidemiological surveillance data for tracking infectious diseases across the United States."
Required Attribution:
Required for Delphi's own novel data: "Data from Delphi COVIDcast. Obtained via the Delphi Epidata API. https://cmu-delphi.github.io/delphi-epidata/api/covidcast.html". CC BY and CC BY-NC sources above also require attributing Delphi as the original source; mirrored/republished sources require following that source's own attribution terms.
Coverage
Signal metadata and time series across sources such as NSSP ED Visits, NHSN Hospitalizations, NWSS Wastewater, Doctor Visits, FluView ILINet, NCHS Mortality Data and more, by geography (county, state, national) and day. Anonymous access is "public datasets only", with "only two parameters may have multiple selections"; a free registered key removes both limits. Update cadence: Not stated as one figure; varies by source.
Verdict
Epidemic indicators (COVID-19, flu, symptom surveys, hospital admissions) by US county/state and day from CMU's Delphi group, via keyless V5/V4 APIs. WARNING: licence varies by signal. Some are CC BY: "These data sources are provided under the terms of the Creative Commons Attribution license : COVID-19 Trends and Impact Survey Doctor Visits Hospital Admissions Indicator Combination (signals with names beginning nmf_* ) Quidel You may use this data for any purpose, provided you attribute us as the original source, as shown above." Others are CC BY-NC: "These data sources are provided under the terms of the Creative Commons Attribution-NonCommercial license : Change Healthcare Youtube Survey You may not use this data for commercial purposes, but all other uses are permitted, provided you attribute us as the original source." Still others mirror their original source's own licence: "These data streams are essentially mirrors of their respective sources, and are published here subject to the original license provided by the source" — check the named source's own terms before use. Anonymous access: "rate-limited to 60 requests per hour" (public datasets only; only two parameters with multiple selections); a free registered key lifts both limits. Signal Lab links only.
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