Abstract
Human immunodeficiency virus (HIV) testing sites have been recognized recently as potential settings for hepatitis C virus (HCV) screening since both viruses share common routes of transmission. HIV and HCV prevalence, predictors, co-infection rates, and viral subtypes were studied in 592 attendants at an anonymous HIV Counseling and Testing Center in central Brazil. Anti-HIV-1 and -HCV antibodies were screened by ELISA, and Western blots were used to confirm HIV infection. Among HIV-seropositive samples, reverse transcriptase-polymerase chain reaction (RT-PCR) and nested-PCR were used to subtype HIV-1 by the Heteroduplex Mobility Analysis (HMA) and HCV by the line probe assay (INNO-LiPA). HIV and HCV seroprevalence was 3.2% (95% CI 2.0-4.9) and 2.5% (95% CI 1.5-4.0), respectively. Intravenous drug use was the risk factor most strongly associated with both HIV and HCV infections, even in a population with few intravenous drug users (n = 6); incarceration was also associated with HCV. HIV/AIDS-positive sexual partner and homosexual/bisexual behaviors were associated independently with HIV-1. The prevalence of HCV infection among HIV-positive persons was 42% (95% CI 20-66), higher than in HIV-negative persons (1.2%; 95% CI 0.5-2....Continue Reading
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