Seroprevalence of SARS-CoV-2 antibodies in a national hospital and affiliated facility after the second epidemic wave of Japan

Healthcare workers (HCWs) are at high risk for coronavirus disease (COVID-19), which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).1,2 However, relative to the general population, there was no increase in the infection risk among HCWs in hospitals with adequate control measures against the infection.3 Studies on the source of infection among HCWs showed a stronger association with community factors than occupational...