Map better the countries, state and provinces

[enrichman]

We should use standard names, and define better the states and provinces.

I.e.: the US has different states and counties, or Italy has regions (states?) and provinces.

[hpatoio]

Italy has regions (states?) and provinces

Italy has 20 regions https://en.wikipedia.org/wiki/Regions_of_Italy and each has provinces.

You can find detailed data here https://github.com/pcm-dpc/COVID-19