Fig. 3From: Geographic and demographic heterogeneity of SARS-CoV-2 diagnostic testing in Illinois, USA, March to December 2020Daily SARS-CoV-2 diagnostic tests administered per 1000 population in each COVID-19 region in Illinois in 2020. Shown: 7-day moving averages. Colors indicate super-region membership of each COVID-19 region, as indicated in Fig. 1aBack to article page