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Fig. 1 | BMC Public Health

Fig. 1

From: Geographic and demographic heterogeneity of SARS-CoV-2 diagnostic testing in Illinois, USA, March to December 2020

Fig. 1

Spatial distribution of and access to COVID-19 diagnostic testing sites in Illinois. a State-designated COVID-19 regions (numbered) and super-regions (colored) of Illinois. Testing sites listed on IDPH’s website on October 26, 2020, are shown in transparent black. b Travel time to nearest Illinois testing site location at 1 km × 1 km spatial resolution, with COVID-19 region boundaries shown in black. c Cumulative distribution of population living within a certain travel time of an Illinois testing site by COVID-19 region. Travel times to Illinois testing site locations on October 26, 2020 were aggregated for each census block group taking the mean of raster points falling within that census block group

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BMC Public Health

ISSN: 1471-2458

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