Schneider Ana Paula Helfer, Gaedke Mari Ângela, Koepp Janine, Reuter Éboni Marília, Darsie Camilo, Possuelo Lia Gonçalves, de Moura Valim Andréia Rosane, Carneiro Marcelo, Covid-Vrp Grupo
Universidade de Santa Cruz do Sul (UNISC), Departamento de Ciências da Vida Santa Cruz do Sul (RS) Brasil Universidade de Santa Cruz do Sul (UNISC), Departamento de Ciências da Vida, Santa Cruz do Sul (RS), Brasil.
Universidade de Santa Cruz do Sul (UNISC), Programa de Pós-Graduação em Promoção da Saúde, Departamento de Ciências da Saúde Santa Cruz do Sul (RS), Brasil Universidade de Santa Cruz do Sul (UNISC), Programa de Pós-Graduação em Promoção da Saúde, Departamento de Ciências da Saúde, Santa Cruz do Sul (RS), Brasil.
Rev Panam Salud Publica. 2021 Nov 19;45:e145. doi: 10.26633/RPSP.2021.145. eCollection 2021.
To estimate the SARS-CoV-2 seroprevalence in a non-metropolitan area (Vale do Rio Pardo) in the state of Rio Grande do Sul, Brazil, and determine the association between seroprevalence and adherence to social distancing measures.
For the present population-based, cross-sectional study, data were collected in four stages from August to October 2020. SARS-CoV-2 seroprevalence was assessed using an IgG/IgM rapid test. Demographic, socioeconomic, clinical, and behavioral data were also collected, with administration of a three-question survey to determine adherence to social distancing measures with a focus on the level of social distancing practiced by participants, their routine activities, and circulation of people in the home. The association between sociodemographic data and social distancing was assessed using the chi-square test for linear trends in proportions, and the association between social distancing and seroprevalence was assessed using Poisson regression (95% confidence interval [95%CI]; < 0.05).
Of 4 252 tested and interviewed participants, 11.8% (95%CI: 10.8; 12.8) did not adhere to social distancing measures. The prevalence of a positive rapid test was 4.7% in participants who did not practice social distancing and 1.9% in participants who adhered to social distancing measures (< 0.05). The variables male sex, age 20 to 59 years, having completed high school, monthly family income ranging from R$ 3 136.00 to R$ 6 270.00, and living in rural areas were associated with non-adherence to social distancing (< 0.05). Adherence to all social distancing measures provided protection against SARS-CoV-2 infection (prevalence ratio: 0.37; 95%CI: 0.19; 0.73).
The results indicate a reduction in seroprevalence with the adherence to social distancing measures.
评估巴西南里奥格兰德州一个非都市地区（里奥帕尔多河谷）的新冠病毒血清流行率，并确定血清流行率与遵守社交距离措施之间的关联。
在本次基于人群的横断面研究中，于2020年8月至10月分四个阶段收集数据。使用IgG/IgM快速检测评估新冠病毒血清流行率。还收集了人口统计学、社会经济、临床和行为数据，并进行了一项包含三个问题的调查，以确定对社交距离措施的遵守情况，重点关注参与者的社交距离程度、日常活动以及家中人员流动情况。使用卡方检验评估人口统计学数据与社交距离之间的线性趋势比例关联，使用泊松回归评估社交距离与血清流行率之间的关联（95%置信区间[95%CI]；<0.05）。
在4252名接受检测和访谈的参与者中，11.8%（95%CI：10.8；12.8）未遵守社交距离措施。未采取社交距离措施的参与者中快速检测呈阳性的比例为4.7%，而遵守社交距离措施的参与者中这一比例为1.9%（<0.05）。男性、年龄在20至59岁之间、完成高中学业、家庭月收入在3136.00雷亚尔至6270.00雷亚尔之间以及居住在农村地区等变量与不遵守社交距离措施相关（<0.05）。遵守所有社交距离措施可预防新冠病毒感染（患病率比值：0.37；95%CI：0.19；0.73）。
结果表明遵守社交距离措施可降低血清流行率。
