Universidade Federal do Ceará, Faculdade de Medicina, Programa de Pós-Graduação em Saúde Pública, Fortaleza, CE, Brasil.
Centro Universitário Christus, Faculdade de Odontologia, Fortaleza, CE, Brasil.
Rev Soc Bras Med Trop. 2022 Apr 29;55:e06062021. doi: 10.1590/0037-8682-0606-2021. eCollection 2022.
The school community was heavily impacted by the Covid-19 pandemic, especially with the long time of school closures. This study aimed to analyze the seroprevalence of SARS-CoV-2 antibodies and possible factors associated with seropositivity for COVID-19 in teachers and other school staff, and to estimate the fraction of asymptomatic individuals by sex and age group.
We conducted a serological survey of SARS-CoV-2 infections. An analytical cross-sectional study was conducted in Fortaleza, Brazil. Teachers and other staff members from pre-schools to universities of higher education to were investigated.
A total of 1,901 professionals participated in the study, of which 1,021 were staff and 880 were teachers. The seroprevalence of SARS-CoV-2 was 8.0% (152/1901). In the seropositive group, 48.3% were asymptomatic. There was a predominance of women (68.4%); and, 47.1% of the participants were between 31 and 45 years old. There was an increase in prevalence with increasing age. An inverse relationship was found for education level: more professionals with less education tested positive for COVID-19. The presence of an infected person living in the same household was significantly associated with positive results for COVID-19 among the professionals.
This is the first study to report the seroprevalence of IgG against SARS-CoV-2 in Brazilian educational staff after the first wave of the disease. In this study, the seroprevalence was much lower than that in the general population. During school reopening, a small fraction of school workers showed serologically detectable signs of SARS-CoV-2 exposure.
学校社区受到新冠疫情的严重影响，尤其是学校关闭的时间很长。本研究旨在分析教师和其他学校工作人员中 SARS-CoV-2 抗体的血清阳性率以及与 COVID-19 血清阳性相关的可能因素，并按性别和年龄组估计无症状个体的比例。
我们进行了一项关于 SARS-CoV-2 感染的血清学调查。在巴西福塔莱萨进行了一项分析性横断面研究。调查了从幼儿园到高等教育的教师和其他工作人员。
共有 1901 名专业人员参加了这项研究，其中 1021 名为工作人员，880 名为教师。SARS-CoV-2 的血清阳性率为 8.0%（152/1901）。在血清阳性组中，48.3%为无症状。女性占主导地位（68.4%）；47.1%的参与者年龄在 31 至 45 岁之间。随着年龄的增长，患病率有所增加。文化程度与患病率呈反比：文化程度较低的专业人员 COVID-19 检测阳性率更高。与家中有感染者同住的人 COVID-19 检测结果呈阳性的可能性显著相关。
这是在疾病第一波后首次报告巴西教育工作者中针对 SARS-CoV-2 的 IgG 血清阳性率的研究。在这项研究中，血清阳性率远低于一般人群。在学校重新开放期间，一小部分学校工作人员表现出 SARS-CoV-2 暴露的血清学可检测迹象。
