title: [Preliminary study of HTLV-I seroprevalence in Chilean Indian populations].
abstract: Aiming to seek the origin and define the prevalence of HTLV-1 infections, 464 blood samples from aboriginal populations proceeding from isolated regions of the north and south of Chile were studied. Antibodies against HTLV were measured with agglutination tests and confirmed with immuno-fluorescence and Western Blotting. Seven out of 107 (6.5%) blood samples from Atacama indians, 2 out of 202 (1%) from Mapuche indians and 3 out of 155 (1.9%) from Huilliche aborigines were positive. These results highlight an important presence of the virus in indigenous populations, specially in the extremes of the country. These findings could suggest an indigenous (mongoloid) origin of HTLV-1 in Chile, specially in Chiloe, where apparently there has been no contact with african or japanese populations, that could be the origin of the contamination.
authors.affiliation: Departamento de Ciencias Neurológicas, Facultad de Medicina, Universidad de Chile (División Oriente), Hospital del Salvador de Santiago.
authors.forename: L
authors.initials: L
authors.lastname: Cartier
authors.forename: K
authors.initials: K
authors.lastname: Tajima
authors.forename: F
authors.initials: F
authors.lastname: Araya
authors.forename: J L
authors.initials: JL
authors.lastname: Castillo
authors.forename: V
authors.initials: V
authors.lastname: Zaninovic
authors.forename: M
authors.initials: M
authors.lastname: Hayami
authors.forename: J
authors.initials: J
authors.lastname: Imai
authors.forename: P
authors.initials: P
authors.lastname: Born
authors.forename: M
authors.initials: M
authors.lastname: Cárdenas
authors.forename: J
authors.initials: J
authors.lastname: Moreno
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002677:Chile / Q000453:epidemiology; D005260:Female; D015481:HTLV-I Antibodies / Q000097:blood*; D015490:HTLV-I Infections / Q000097:blood* / Q000453:epidemiology; D006801:Humans; D007199:Indians, South American; D008297:Male; D008875:Middle Aged; D012737:Sex Factors
chemical_list: D015481:HTLV-I Antibodies
vernacular_title: Estudio preliminar de seroprevalencia de HTLV-I en población indígena Chilena.