Antiretroviral drug resistance in a respondent-driven sample of HIV-infected men who have sex with men in Brazil.

Background: : There are few studies on HIV subtypes and primary and secondary antiretroviral drug resistance (ADR) in community-recruited samples in Brazil. We analyzed HIV clade diversity and prevalence of mutations associated with ADR in men who have sex with men in all five regions of Brazil.

Methods: : Using respondent-driven sampling, we recruited 3515 men who have sex with men in nine cities: 299 (9.

[HTLV 1/2 infection: prenatal performance as a disease control strategy in State of Mato Grosso do Sul].

In this study, the prevalence of HTLV 1/2 infection among pregnant women in the State of Mato Grosso do Sul was estimated by means of the ELISA, Western Blot and PCR techniques, in blood samples collected by peripheral venous puncture. 116,689 pregnant women were examined and 153 were diagnosed as presenting HTLV 1/2 infection, with prevalence of 0.13%.

Prospective study on the prevention of vertical transmission of HIV in Campo Grande, Mato Grosso do Sul, Brazil, from 1996 to 2001.

This prospective study, involving 76 pregnant women infected with HIV, paired with their 79 exposed infants, was carried out between May 1996 and October 2001, at the Reference Department for Pregnant Women Infected with HIV in Campo Grande, Mato Grosso do Sul. The mean age of the pregnant women was 24 years; 88% (67/76) apparently were infected due to sexual practices; 88% (67/76) were housewives; 823% (63/76) graduated from junior high school; 14.5% (11/76) reported co-infection with Hepatitis C, 9.