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High prevalence of anti-SARS-CoV-2 IgG antibody in the Xikrin of Bacajá (Kayapó) indigenous population in the brazilian Amazon

2021; BioMed Central; Volume: 20; Issue: 1 Linguagem: Inglês

10.1186/s12939-021-01392-8

1475-9276

Eliene Putira Sacuema Rodrigues, Isabella Nogueira Abreu, Carlos Neandro Cordeiro Lima, Dennyson Leandro M. Fonseca, Sávio Felipe Gomes Pereira, Laena Costa dos Reis, Izaura Maria Vieira Cayres Vallinoto, João Farias Guerreiro, Antônio Carlos Rosário Vallinoto,

Mosquito-borne diseases and control

Abstract The COVID-19 pandemic caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) reached the Brazilian Amazon and spread among indigenous populations. In the present study, we demonstrate a high prevalence of infection among the Xikrin of Bacajá people (Kayapó). A sample of 100 individuals of both sexes (51 men and 49 women) with ages ranging from 2 to 82 years were clinically evaluated and tested for the presence of anti-SARS-CoV-2 IgG antibody. Among all investigated individuals, 58 were IgG-reactive (58 %) by a rapid test, and 73 (73 %) were reactive in an enzyme-linked immunosorbent assay, with no difference between sexes. Oxygen saturation ranged from 82 to 99 %, with the lowest value observed in a two-year-old girl. The results show that as expected, SARS-CoV-2 infection rapidly reached more than 70 % of the population, most likely because of the difficulties of maintaining social distance due to cultural characteristics. These results highlight the importance of indigenous health policies as a means of minimizing the impact of the pandemic on these communities.