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High rate of infection with the human T-cell leukemia retrovirus type II in four Indian populations of Argentina.

Abstract：

:Sera from 215 non-drug-injecting Toba and Mataco-Mataguayo pure Indians belonging to four communities in northern Argentina were examined using assays that allow differentiation between reactivities due to type-specific antigens of the human T-cell leukemia/lymphoma virus (HTLV). Three of these populations have very little contact with non-Indian groups and reside in remote, isolated areas. HTLV-II type-specific seroreactivity was present in 24 (13.7%) of the 175 Indians older than 13 years of age and in none of the 40 who were of younger ages. None of the Indians had antibodies reacting with HTLV-I type-specific antigen. Seroreactivity was more prevalent and appeared at younger ages in females than in males. The majority of the HTLV-II-seropositive Indians belonged to the more isolated communities. The seroprevalences among the Tobas and Mataco-Mataguayo Indians were comparable. With the exception of a Toba who was positive in a test for Treponema pallidum, no serological evidence of sexually transmitted infections with this spirochete, hepatitis B virus, hepatitis C virus, and human immunodeficiency virus was found among the Indians tested. None of the 55 non-Indian people tested in the region showed HTLV-II type-specific seroreactivity. PCR analysis of DNA isolated from peripheral blood lymphocytes of seropositive Indians confirmed that the virus present in these populations is HTLV-II. Sequence analysis of PCR-amplified genomic segments showed that the virus belongs to the HTLV-II subtype which has been found to be endemic in other Paleo-American Indians.

journal_name

Virology

journal_title

Virology

authors

Ferrer JF,Del Pino N,Esteban E,Sherman MP,Dube S,Dube DK,Basombrio MA,Pimentel E,Segovia A,Quirulas S

doi

10.1006/viro.1993.1631

subject

Has Abstract,Author List Incomplete

pub_date

1993-12-01 00:00:00

pages

576-84

issue

2

eissn

0042-6822

issn

1096-0341

pii

S0042682283716314

journal_volume

197

pub_type

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