Covid-19 Datenhub vs Open Disease

Robert Koch Institute's ArcGIS Hub aggregating dozens of official German COVID-19 datasets — case, death, vaccination, and hospitalisation figures by Kreis and Bundesland — each independently queryable as a standard Esri ArcGIS REST Feature Service rather than through one unified endpoint. A live query against the flagship RKI_COVID19 FeatureServer (services7.arcgis.com) returns Access-Control-Allow-Origin: *, resolving the stored 'unknown' 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'.