2015-01-082015-01-081992-08NAKAUCHI, C.M. et al. Prevalence of HTLV-I antibody among two distinct ethnic groups inhabiting the Amazon region of Brazil. Revista do Instituto de Medicina Tropical de São Paulo, São Paulo, v. 34, n. 4, p. 323-328, jul./ago. 1992. Disponível em: <www.scielo.br/pdf/rimtsp/v34n4/a09v34n4.pdf>. Acesso em: 29 dez. 2014. <http://dx.doi.org/10.1590/S0036-46651992000400009>.0036-4665https://repositorio.ufpa.br/handle/2011/6194HTLV-I seroprevalences of 3.63% (02/55), 12.19% (10/82) and 13.88% (10/72) were demonstrated among Tiryio, Mekranoiti and Xicrin Amazonian Indians, respectively, by the Western blotting enzyme assay (WBEI). By indirect immuno electron microscopy (IIEM), 2 Tiriyo, 9 Mekranoiti and 6 Xicrin Amerindians were reactive. Of 44 serum samples from Japanese immigrants, none reacted by any of the techniques before mentioned. One, 8 and 6 serum samples from Tiryio, Mekranoiti and Xicrin Indians, respectively, were both WBEI and IIEM positive. Our results strongly suggest that HTLV-I and/or an HTLV-I antigenic variant circulate (s) among populations living in the Amazon region of Brazil.engAcesso AbertoSoroprevalênciaHTLV-I (Vírus)Vírus linfotrópico de células T humanas tipo 1Infecção por HTLVVírus 1 linfotrópico T humanoAnticorposCélulas humanasLeucemiaGrupos étnicosComunidade indígenaPará - EstadoAmazônia brasileiraArtigo de Periódico