Lotsa work.
Another map by county:
https://www.nytimes.com/interactive/2020/us/coronavirus-us-cases.html
Must be new since I started mine.
Harvesting the data is the hardest and most time consuming part. The software does the rest.
I see they have Nebraska and Nevada data too.
Color the highly infected areas blue, and the low infected areas red, and that map would look almost identical to the Presidential Election Results map.
Heaviest hit areas appear to correlate to “foreign container ship” traffic.