Data updated time: 2020-03-28
Created by GISers from CGIS, UMD
US Covid-19 States Testing Timeline
(one click on map to zoom in; click again to zoom out)
2020-03-04
2020-03-28
Contribution: Visualization by Yao Li. Data collection by Jeff Sauer from CGIS, University of Maryland, College Park.
Data source: Covidtracking.com