Percent of County Population with Confirmed Cases -May 31, 2020

The map below demonstrates the percent of confirmed cases per county, based upon each county's population.

Spread of Covid-19 continued in May, 2020. Fewer counties had no cases and in several states, all counties had cases. At this point in time, the virus had not yet spread significantly to the interior Northwest. Clusters of high infection incidence are evident in Northeastern Arizona, and a segment of the Eastern coast including New York City and Boston.