MGM Journal of Medical Sciences (Jan 2022)

COVID immunity in the Angolan population: Serological study with Abbott COVID-19 IgG/IgM Rapid Test and serological mini VIDAS BIOMERIEUX test

  • Renata Almeida,
  • Ileana Desormais,
  • Philippe Taton,
  • Elvis Morales,
  • Andre Reis,
  • Yara Simba

DOI
https://doi.org/10.4103/mgmj.mgmj_91_21
Journal volume & issue
Vol. 9, no. 1
pp. 33 – 37

Abstract

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Background: The numbers of severe COVID cases and COVID-related deaths on the African continent are lower than expected. We hypothesize that this paradox may be due to the achieved immunity in black Africans. Materials and Methods: A prospective study was conducted on Angolan people who performed the Panbio Abbott COVID-19 IgG/IgM Rapid Test in a health unit in Luanda. One hundred randomly selected subjects in those with positive immunoglobulin G (IgG) underwent the serological mini VIDAS BIOMERIEUX test. Results: In our population study (2409 subjects), 791 (32.83%) had positive IgG at the Panbio Abbott COVID-19 test. One hundred were randomly selected. The mean age was 39.55, and 96% were males. The positivity to IgG was validated in 72 subjects at the mini VIDAS BIOMERIEUX test. Conclusion: These results support our hypothesis that in the Angolan/African population a previously achieved immunity may be one of the reasons why this continent was not affected by COVID-19 as expected.

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