In May 2020, the Cascais City Council established a partnership with GHTM to conduct a community-level seroprevalence survey, which included blood serology testing for SARS-CoV-2 antibodies together with socio-demographic and clinical questions. The study’s 1st phase was between May and September 2020 and had 12,032 respondents – 5.62% of Cascais population. The reactive tests’ %s were, respectively: 1.3 overall, 1.16 females and 1.56 males; having the 20-39 age group the highest prevalence (2%).
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