Prevalence of SARS-CoV-2 Antibodies after First 6 Months of COVID-19 Pandemic,Portugal |
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| Authors: | Luí sa Canto e Castro,Ana Helena Guia Pereira,Rita Ribeiro,Catarina Alves,Luí s Veloso,Vera Vicente,Dalila Alves,Inê s Domingues,Clá udia Silva,Andreia Gomes,Marta Serrano, ngela Afonso,Marc Veldhoen,Maria José Rego de Sousa,José Germano Rego de Sousa,Germano de Sousa,Maria M. Mota,Bruno Silva-Santos,Ruy M. Ribeiro |
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| Abstract: | In September 2020, we tested 13,398 persons in Portugal for antibodies against severe acute respiratory syndrome coronavirus 2 by using a quota sample stratified by age and population density. We found a seroprevalence of 2.2%, 3–4 times larger than the official number of cases at the end of the first wave of the pandemic. |
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| Keywords: | coronavirus disease COVID-19 pandemic severe acute respiratory syndrome coronavirus 2 SARS-CoV-2 coronaviruses viruses respiratory infections population prevalence seroepidemiology antibodies zoonoses Portugal |
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