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. 2022 Nov 16;19(1):57.
doi: 10.1186/s12979-022-00310-y.

The oldest unvaccinated Covid-19 survivors in South America

Affiliations

The oldest unvaccinated Covid-19 survivors in South America

Mateus V de Castro et al. Immun Ageing. .

Erratum in

  • Correction: The oldest unvaccinated Covid-19 survivors in South America.
    de Castro MV, Silva MVR, Naslavsky MS, Scliar MO, Nunes K, Passos-Bueno MR, Castelli EC, Magawa JY, Adami FL, Moretti AIS, de Oliveira VL, Boscardin SB, Cunha-Neto E, Kalil J, Jouanguy E, Bastard P, Casanova JL, Quiñones-Vega M, Sosa-Acosta P, Guedes JS, de Almeida NP, Nogueira FCS, Domont GB, Santos KS, Zatz M. de Castro MV, et al. 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.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Supercentenarians present higher titers of IgG to RBDs of seasonal coronaviruses than for SARS-CoV-2 and neutralization titers above 160 (the minimum titer initially established by the FDA for convalescent plasma donors) [35]. The numbers represent the 3 individuals. The graph on top indicates IgG ratios for each RBD and the table above shows VNT for SARS-COV-2. VNT - Virus Neutralization Titers. Antibody levels expressed in ratios are shown for SARS-CoV-2 and the four seasonal coronaviruses. Neutralization titers are expressed in dilution. ID 02 was asymptomatic, and IDs 1 and 3 were symptomatic and recovered from Covid-19
Fig. 2
Fig. 2
Plasma proteomics and metabolomics analyses of the supercentenarians infected with SARS-CoV-2 compared to healthy elderly subjects (> 95 years-old / non-infected). Volcano plots showing differentially expressed proteins (A) and metabolites (B). Red and blue dots represent the up- and down-regulated proteins/metabolites, respectively. Protein-metabolite interaction network was built with the statistically significant proteins with OmicsAnalyst platform (C). Red and blue nodes denote the up- and down-regulated proteins/metabolites, respectively. Circle and diamond node shapes represent metabolites and proteins, respectively

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