COVID-19 seroepidemiological survey among healthcare workers in the City of Ribeirão Preto, São Paulo, Brazil

BACKGROUNDCoronavirus disease (COVID-19) serology testing evaluates the prevalence of COVID-19 cases. METHODSA seroepidemiological survey of COVID-19 among healthcare workers was performed (June 2020 to November 2020) in Ribeirão Preto, São Paulo, Brazil. Overall, 10,172 and 2,129 workers participated in the first and second phases, respectively. RESULTSFirst phase: 12.7% tested positive for COVID-19 (73.5% females and 35.2% aged 30-39 years), and 29.6% were nursing technicians. Second phase: 12.1% tested positive for COVID-19 (65.5% females and 33.3% aged 40-49 years), and 24.8% were nursing assistants. CONCLUSIONSIn 2020, healthcare workers in Ribeirão Preto had COVID-19 in a similar way.