Large scale screening for SARS-CoV-2 among healthcare workers: prevalence and risk factors for asymptomatic/pauci-symptomatic carriers, with emphasis on PPE use.

HCWs not fulfilling COVID-19 case definition underwent SARS-CoV-2 screening. Risk of exposure, PPE adherence and symptoms were assessed. Two thousand HCWs were screened: 5.5% were PCR+. There were no differences in PPE use between PCR+ and PCR- HCWs (adherence >90%). Nursing and kitchen staff were independently associated with PCR+.