“Health care workers (HCWs) are presumed to be athigh risk for coronavirus disease 2019 (COVID-19)through occupational exposure to infected patients orcoworkers. Studies have reported a wide range of sero-prevalence of severe acute respiratory syndrome corona-virus 2 (SARS-CoV-2), the virus that causes COVID-19,among HCWs. This variation has in part been attributedto differential risk for exposure in the community. Indeed, recent studies have shown that a substantialnumber of infections among HCWs could not be tracedto occupational exposures and that community expo-sures were as or more strongly associated with infection.”