Alliance for Pandemic Preparedness

August 14, 2020

Trends in Number and Distribution of COVID-19 Hotspot Counties — United States, March 8–July 15, 2020

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  • US data from January 22-July 15 were analyzed to detect “hotspot” counties. No hotspots were identified prior to March 7, but 818 counties (corresponding to 80% of the US population) met hotspot criteria for one or more days between from March 8 to July 15. The number of hotspot counties peaked in early April, decreased, and then increased again in late June.  

Oster et al. (Aug 14, 2020). Trends in Number and Distribution of COVID-19 Hotspot Counties — United States, March 8–July 15, 2020. MMWR. https://doi.org/10.15585/mmwr.mm6933e2