Prevalence of SARS-CoV-2 Antibodies after First 6 Months of COVID-19 Pandemic, Portugal
- Luísa Canto e Castro
- Ana Helena Guia Pereira
- Rita Ribeiro
- Catarina Alves
- Luís Veloso
- Vera Vicente
- Dalila Alves
- Inês Domingues
- Cláudia Silva
- Andreia Gomes
- Marta Serrano
- Ângela 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
Publication date
November 2021
DOI Publisher
Centers for Disease Control and Prevention (CDC) Journal
Emerging Infectious DiseasesAbstract
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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