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

ABSTRACT Background: Coronavirus disease (COVID-19) serology testing evaluates the prevalence of COVID-19 cases. Methods: A 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. Results: First 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. Conclusions: In 2020, healthcare workers in Ribeirão Preto had COVID-19 in a similar way.

摘要
研究背景：新型冠状病毒病（COVID-19）血清学检测可用于评估新冠感染病例的流行情况。
研究方法：2020年6月至2020年11月，在巴西圣保罗州里贝朗普雷图市开展了一项针对医护人员的新冠血清流行病学调查。共计有10172名医护人员参与第一阶段调研，2129名参与第二阶段调研。
研究结果：第一阶段中，12.7%的受试者新冠病毒检测结果呈阳性，其中女性占比73.5%，30～39岁年龄段人群占比35.2%，且29.6%为护理技术员。第二阶段中，12.1%的受试者新冠病毒检测结果呈阳性，其中女性占比65.5%，40～49岁年龄段人群占比33.3%，且24.8%为护理助理。
研究结论：2020年，里贝朗普雷图市的医护人员新冠感染率处于相近水平。