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Population-level seropositivity trend for SARS-Cov-2 in Rio Grande do Sul, Brazil

Barros,Aluísio J D; Victora,Cesar G; Menezes,Ana M B; Horta,Bernardo L; Barros,Fernando C; Hartwig,Fernando P; Victora,Gabriel D; Vidaletti,Luis Paulo

ABSTRACT OBJECTIVE To describe the evolution of seropositivity in the State of Rio Grande do Sul, Brazil, through 10 consecutive surveys conducted between April 2020 and April 2021. METHODS Nine cities covering all regions of the State were studied, 500 households in each city. One resident in each household was randomly selected for testing. In survey rounds 1–8 we used the rapid WONDFO SARS-CoV-2 Antibody Tes...

Date: 2021   |   Origin: Oasisbr
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