From the Webpage: "The US COVID [coronavirus disease 2019] Atlas is a visualization tool led by a University of Chicago research coalition. In a quickly changing pandemic landscape, our tool connects COVID case data and community indicators across the United States from its beginning to today. The Atlas helps you access current, validated county-level data and spatial analysis to better understand the spread in communities and to bolster planning efforts."
University of Chicago. Center for Spatial Data Science
US COVID Atlas: https://geodacenter.github.io/covid/index.html