We assessed the risk for different exposures to SARS-CoV-2 during a COVID-19 outbreak among healthcare workers on a hospital ward in late 2020. We found working with isolated COVID-19 patients did not increase the risk of COVID-19 among workers, but working shifts with presymptomatic healthcare coworkers did.
Keywords: COVID-19; SARS-CoV-2; contact tracing; coronavirus disease; disease outbreaks; healthcare delivery; healthcare personnel; infectious disease transmission; patient-to-professional; risk factors; severe acute respiratory syndrome; severe acute respiratory syndrome epidemiology; severe acute respiratory syndrome transmission.