KINSA, And The Health Weather Map Of The USA. Yes, There Is One.

The health weather map of the US from Kinsa is the twenty first century I've been waiting for. People that bought the digital thermometer use an auto app sending data to Kinsa where a map is daily generated of all 2000 counties.  Go to healthweather.com

"Kinsa’s illness signal consists of data from over 1,300,000 thermometers with 60,000-160,000 readings driving our signal every day."

It defaults to a guesswork map of atypical fever reports they think are attributed to coronavirus.  The drop down window (upper right) gives three more views.
"Atypical"  "Trend  and  "Observed".  These three don't involve guesswork. The color tells you how it compares for the same season other years.
What's stunning is that levels of fever are low or way below average everywhere now.
A lot of fevers that aren't coronavirus-linked are way down.

This county map is of all fevers in continental USA.  Possibly as low as it's ever been for mid-May..
A guessed-at map (C.Atypical)  shows where coronavirus may be raging but it is a coloured
subset of this greyed one.