Covid Tracking Project vs Open Disease

The COVID Tracking Project's public archive API, serving the US state- and national-level testing, hospitalization, and case/death time series the volunteer project compiled through early 2021. Data collection officially ended 2021-03-07 and the project shut down, but the JSON (v1/v2) and CSV endpoints continue to serve that final historical dataset unchanged since a 2021-06-01 build. A live GET against api.covidtracking.com returns Access-Control-Allow-Origin: *, correcting the stored 'no' cors to 'yes'.

disease.sh aggregates COVID-19, influenza, and general public-health case/vaccination data from Johns Hopkins CSSE, WHO, and other public feeds into a single keyless JSON API, with endpoints scoped by country, US state, or continent plus historical time-series. A live GET against disease.sh/v3/covid-19/all and a live Origin-header probe both return Access-Control-Allow-Origin: *, reconfirming the already-stored 'yes'.