title: Prevalence of HTLV-I antibody among two distinct ethnic groups inhabiting the Amazon region of Brazil.
abstract: HTLV-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 immunoelectron 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.
authors.affiliation: Instituto Evandro Chagas, Fundação Nacional de Saúde, Belém, Pará, Brasil.
authors.forename: C M
authors.initials: CM
authors.lastname: Nakauchi
authors.forename: K
authors.initials: K
authors.lastname: Maruyama
authors.forename: L I
authors.initials: LI
authors.lastname: Kanzaki
authors.forename: A C
authors.initials: AC
authors.lastname: Linhares
authors.forename: V N
authors.initials: VN
authors.lastname: Azevedo
authors.forename: T
authors.initials: T
authors.lastname: Fukushima
authors.forename: M
authors.initials: M
authors.lastname: Miyauchi
authors.forename: N
authors.initials: N
authors.lastname: Koshikawa
authors.forename: C
authors.initials: C
authors.lastname: Tamayama
authors.forename: S
authors.initials: S
authors.lastname: Mochizuki
mesh_terms: D015153:Blotting, Western; D001938:Brazil / Q000453:epidemiology; D015481:HTLV-I Antibodies / Q000097:blood*; D015490:HTLV-I Infections / Q000208:ethnology* / Q000276:immunology*; D006801:Humans; D007150:Immunohistochemistry; D007199:Indians, South American / Q000706:statistics & numerical data; D007564:Japan / Q000208:ethnology; D016253:Microscopy, Immunoelectron; D015995:Prevalence; D016036:Seroepidemiologic Studies
chemical_list: D015481:HTLV-I Antibodies