The oldest unvaccinated Covid-19 survivors in South America

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...

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Detalles Bibliográficos
Autores principales: de Castro, Mateus V., Silva, Monize V. R., Naslavsky, Michel S., Scliar, Marilia O., Nunes, Kelly, Passos-Bueno, Maria Rita, Castelli, Erick C., Magawa, Jhosiene Y., Adami, Flávia L., Moretti, Ana I. S., de Oliveira, Vivian L., Boscardin, Silvia B., Cunha-Neto, Edecio, Kalil, Jorge, Jouanguy, Emmanuelle, Bastard, Paul, Casanova, Jean-Laurent, Quiñones-Vega, Mauricio, Sosa-Acosta, Patricia, de Guedes, Jéssica S., de Almeida, Natália P., Nogueira, Fábio C. S., Domont, Gilberto B., Santos, Keity S., Zatz, Mayana
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2022
Materias:
Research
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9666972/
https://www.ncbi.nlm.nih.gov/pubmed/36384671
http://dx.doi.org/10.1186/s12979-022-00310-y
Descripción
Sumario: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. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12979-022-00310-y.

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