Document 3185 DOCN M94A3185 TI Prevalence of HTLV-I/II antibodies among HIV-1-asymptomatic patients in Sao Paulo, Brazil. DT 9412 AU Casseb JS; Caterino-de-Araujo A; Duarte AJ; Inst. de Infect. Emilio Ribas, Sao Paulo, Brazil. SO Int Conf AIDS. 1994 Aug 7-12;10(1):133 (abstract no. PA0152). Unique Identifier : AIDSLINE ICA10/94369390 AB OBJECTIVE: To determine the seroprevalence of HTLV-I/II antibodies in HIV-1-asymptomatic subjects, and identify the major route of contamination with these dual retroviruses. PATIENTS AND METHODS: A cohort of 123 HIV-1-infected individuals in ambulatorial accompaniment to study the natural HIV history at the Secondary Immunodefiencies Ambulatory, Immunology Division, Hospital das Clinicas, University of Sao Paulo; others 208 HIV-1-asymptomatic patients recently diagnosed as HIV-1-infected at the Center of Counselling to Sexual Transmitted Diseases and AIDS (COAS) of Sao Paulo city, and 60 HIV-1 seronegative subjects presenting some risk behaviour to acquire these retroviruses were analysed in this study. Serum samples obtained from individuals were tested for the presence of HTLV-I/II antibodies using two ELISA kits. (Retrotek-HTLV-I, Cellular Products, NY, USA and Hemobio anti-HTLV-I, Embrabio, SP, Br). Sera dually positive were confirmed by WB (Immunoblot WB anti-HTLV-I, Embrabio, SP, Br). Positive and indeterminated sera were tested to WB 2.3 HTLV-I and HTLV-II (Cellular Products Inc. NY, USA). The serological results obtained were analysed according to risk behaviour for acquiring retrovirus and CDC classification system, 1986. RESULTS: from a total of 331 HIV-1-infected sera tested, 25 (7.5%) resulted reactive for HTLV-I/II antibodies in both ELISA tests; 6 (1.8%) had WB positivity and 9 (2.4%) presented an indeterminated WB profile. On WB 2.3 analysis, 7 (1.6%) confirmed HTLV-I and 2(0.6%) HTLV-II infections. Among 60 HIV-I seronegative individuals, none showed HTLV antibodies reactivity Among 36 IVDA, 1 (2.8%) presented HTLV-I and 1 (2.8%) HTLV-II infection on WB 2.3 analysis, respectively. These results contrast with those obtained previously, when IVDA with AIDS presented at least 26.4% of HTLVs infections. DE Acquired Immunodeficiency Syndrome/BLOOD/*COMPLICATIONS/ EPIDEMIOLOGY Brazil/EPIDEMIOLOGY Cohort Studies Enzyme-Linked Immunosorbent Assay Human HIV Seronegativity *HIV-1 HTLV-I Antibodies/*BLOOD HTLV-I Infections/BLOOD/COMPLICATIONS/*EPIDEMIOLOGY HTLV-II Antibodies/*BLOOD HTLV-II Infections/BLOOD/COMPLICATIONS/*EPIDEMIOLOGY Prevalence Risk-Taking Substance Abuse, Intravenous Support, Non-U.S. Gov't MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).