You can use COVID-19 APIs available on RapidAPI Hub to create excellent statistical applications.
COVID-19 data API provides you the full COVID stats and daily reports of all the countries.
COVID-19 Tracking API presents the country-wise COVID stats, including total cases, recovered, deaths, etc. This API also enables you to get the stats related to COVID tests.
Coronavirus Smartable API offers the latest and historic COVID-19 stats and news information per country or state.
VACCOVID is a comprehensive up-to-date Vaccine, COVID-19, and Treatment tracker API. Moreover, you can also find the most relevant and up-to-date news about COVID-19.
Get a piece of surplus information and stats about the COVID pandemic using COVID-19 API, including some advanced statistics like critical cases and a bunch of other information about COVID testing.
You can always head over to RapidAPI Hub and search for the best-suited API for you.