The oldest unvaccinated Covid-19 survivors in South America
- PMID: 36384671
- PMCID: PMC9666972
- DOI: 10.1186/s12979-022-00310-y
The oldest unvaccinated Covid-19 survivors in South America
Erratum in
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Correction: The oldest unvaccinated Covid-19 survivors in South America.Immun Ageing. 2022 Dec 7;19(1):61. doi: 10.1186/s12979-022-00319-3. Immun Ageing. 2022. PMID: 36476248 Free PMC article. No abstract available.
Abstract
Background: Although older adults are at a high risk of severe or critical Covid-19, there are many cases of unvaccinated centenarians who had a silent infection or recovered from mild or moderate Covid-19. We studied three Brazilian supercentenarians, older than 110 years, who survived Covid-19 in 2020 before being vaccinated.
Results: Despite their advanced age, humoral immune response analysis showed that these individuals displayed robust levels of IgG and neutralizing antibodies (NAbs) against SARS-CoV-2. Enrichment of plasma proteins and metabolites related to innate immune response and host defense was also observed. None presented autoantibodies (auto-Abs) to type I interferon (IFN). Furthermore, these supercentenarians do not carry rare variants in genes underlying the known inborn errors of immunity, including particular inborn errors of type I IFN.
Conclusion: These observations suggest that their Covid-19 resilience might be a combination of their genetic background and their innate and adaptive immunity.
Keywords: Covid-19; Elderly; SARS-CoV-2; Supercentenarians.
© 2022. The Author(s).
Conflict of interest statement
The authors declare that they have no competing interests.
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References
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