Emerging Infectious Diseases (Mar 2023)

Seroprevalence of Specific SARS-CoV-2 Antibodies during Omicron BA.5 Wave, Portugal, April–June 2022

  • Irina Kislaya,
  • Aryse Melo,
  • Marta Barreto,
  • Camila Henriques,
  • Carlos Aniceto,
  • Carla Manita,
  • Sara Ramalhete,
  • João Almeida Santos,
  • Sofia Soeiro,
  • Ana Paula Rodrigues

DOI
https://doi.org/10.3201/eid2903.221546
Journal volume & issue
Vol. 29, no. 3
pp. 590 – 594

Abstract

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After the rapid spread of SARS-CoV-2 BA.5 Omicron lineage in Portugal, we developed a seroepidemiologic survey based on a sample of 3,825 residents. Results indicated that from April 27 through June 8, 2022, the estimated seroprevalence of SARS-CoV-2 nucleocapsid or spike IgG was 95.8%, which indicates a high level of protection.

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