“Intresting is the areas affected most run along the coastline states. California, Washington,Texas, Ny, NJ, New England and Florida gulf area.”
that could be simply because the coastal areas are much more popular points of entry to the U.S. than fly-over-america, and it’s taking longer to penetrate from the coasts into the interior ...
You might find this map interesting to follow...I find it keeps up very well and the enlarged areas as they increase. Scroll just a little bit....
https://www.nytimes.com/interactive/2020/us/coronavirus-us-cases.html