BackgroundLimited data is available regarding the frequency of COVID-19 in populations that are highly exposed to SARS-CoV-2. In this cross-section study we evaluated COVID-19 seroprevalence in military police forces of 10 major cities in Rio Grande do Sul. South of Brazil. MethodsSampling was randomly performed in clusters. https://allfixelectricales.shop/product-category/hose-connection-trim-ring/