Re-infection by covid-19 can be more aggressive and does not depend on variants, reveals Fiocruz

posted on 05/04/2021 15:05


(credit: AFP / SILVIO AVILA)

One study made by the Oswaldo Cruz Foundation (Fiocruz), and which has not yet been published, points out that a second infection with covid-19 may be more serious than the first time. The research also says that this does not depend on the variants that are in circulation.

The research, which was carried out in partnership with the Federal University of Rio de Janeiro (UFRJ) and Instituto D’Or de Ensino e Pesquisa (Idor), analyzed cases of reinfection that occurred in Rio de Janeiro between May and December 2020. The The result showed that the patients had more severe symptoms in the second occurrence even though they were not infected by the variants.

“Our discovery that people with mild covid-19 may have controlled the replication of Sars-Cov-2 without developing humoral immunity * detectable suggests that reinfection is more frequent than is supposed, but this hypothesis is not well documented “, says the study.

Not only can mutations cause reinfection

The data obtained in the study deny that only mutations could cause reinfections. Therefore, the researchers reinforce the warning about the need to maintain measures to contain the disease.

Another study by Fiocruz, published in January, already warned of the false sense of protection that the asymptomatic infection could bring. According to the research, in these cases the organism does not create an immunological memory after the first infection.

* Subdivision of acquired immunity where the immune response is carried out by antibodies.

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