This API grabs live statistics from https://www.worldometers.info/coronavirus/#countries web site periodically.
It uses the Dataflow Kit API to scrape source web site.

GET /v1 - List all COVID-19 cases per country.

GET /v1/{cntr} - Return COVID-19 cases for specified country.

If no {cntr} parameter specified, the full dataset returned.
Specify {cntr} parameter to extract results for this country only.
To extract summary results for the whole world, enter “world” value as {cntr} parameter.

Examples:
https://covid-19.dataflowkit.com/v1/world - summary results for the whole world.
https://covid-19.dataflowkit.com/v1/spain - COVID-19 cases for Spain.
https://covid-19.dataflowkit.com/v1/usa - COVID-19 cases for the USA.

You can embed free COVID-19 live statistics web widgets into your site.

Source code is available at https://github.com/slotix/COVID-19
Check out our blog article about COVID-19 Tracker API