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Nationally representative SARS-CoV-2 antibody prevalence estimates after the first epidemic wave in Mexico

Author

Listed:
  • Ana Basto-Abreu

    (National Institute of Public Health)

  • Martha Carnalla

    (National Institute of Public Health)

  • Leticia Torres-Ibarra

    (National Institute of Public Health)

  • Martín Romero-Martínez

    (National Institute of Public Health)

  • Jesús Martínez-Barnetche

    (National Institute of Public Health)

  • Irma López-Martínez

    (Institute for Epidemiological Diagnosis and Reference)

  • Rodrigo Aparicio-Antonio

    (Institute for Epidemiological Diagnosis and Reference)

  • Teresa Shamah-Levy

    (National Institute of Public Health)

  • Celia Alpuche-Aranda

    (National Institute of Public Health)

  • Juan A. Rivera

    (National Institute of Public Health)

  • Tonatiuh Barrientos-Gutierrez

    (National Institute of Public Health)

Abstract

Seroprevalence surveys provide estimates of the extent of SARS-CoV-2 infections in the population, regardless of disease severity and test availability. In Mexico in 2020, COVID-19 cases reached a maximum in July and December. We aimed to estimate the national and regional seroprevalence of SARS-CoV-2 antibodies across demographic and socioeconomic groups in Mexico after the first wave, from August to November 2020. We used nationally representative survey data including 9,640 blood samples. Seroprevalence was estimated by socioeconomic and demographic characteristics, adjusting by the sensitivity and specificity of the immunoassay test. The national seroprevalence of SARS-CoV-2 antibodies was 24.9% (95%CI 22.2, 26.7), being lower for adults 60 years and older. We found higher seroprevalence among urban and metropolitan areas, low socioeconomic status, low education and workers. Among seropositive people, 67.3% were asymptomatic. Social distancing, lockdown measures and vaccination programs need to consider that vulnerable groups are more exposed to the virus and unable to comply with lockdown measures.

Suggested Citation

  • Ana Basto-Abreu & Martha Carnalla & Leticia Torres-Ibarra & Martín Romero-Martínez & Jesús Martínez-Barnetche & Irma López-Martínez & Rodrigo Aparicio-Antonio & Teresa Shamah-Levy & Celia Alpuche-Aran, 2022. "Nationally representative SARS-CoV-2 antibody prevalence estimates after the first epidemic wave in Mexico," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28232-9
    DOI: 10.1038/s41467-022-28232-9
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    References listed on IDEAS

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    1. Juan Pablo Gutierrez & Stefano M Bertozzi, 2020. "Non-communicable diseases and inequalities increase risk of death among COVID-19 patients in Mexico," PLOS ONE, Public Library of Science, vol. 15(10), pages 1-11, October.
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