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Dear Editor—As of May 12, 2020, over 4.2 million cases of COVID-19 across 187 countries have been reported, of which 1.3 million have occurred in the United States (US) alone [1]. Although many infected individuals will have mild symptoms, older patients are disproportionately more likely to progress to severe disease (US adults aged 65À84 are hospitalized at a rate of 31À59%, and infected adults over 85 at a rate of 31À70%)[2]. As hospital capacity and the population density of older adults vary considerably across the country and worldwide, understanding which regions will face disproportionate burden from a surge in hospitalizations is necessary for targeted preparedness efforts. We analyzed these data in the context of the US, mapping the hospital bed capacity in relation to the prevalence of older adults for all US counties (Fig. 1 a). We also mapped case fatality rate (CFR) of COVID-19 for all US counties …