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RESEARCH NOTE - Molecular epidemiology of HIV in Brazil: Polymorphism of the antigenically distinct HIV-1 B subtype strains MG Morgado; ML Guimaraes; I Neves Jr; VG Veloso dos Santos; MI Linhares-de-Carvalho; LR Castello-Branco; FI Bastos; EA Castilho; B Galvao-Castro; V Bongertz & The Hospital Evandro Chagas AIDS Clinical Research Group Abstract HIV is one of the most genetically polymorphic human emergent pathogens of this century. Two related viruses, HIV-1 and HIV-2 were identified as ethiological agents of the human acquired immunodeficiency syndrome (AIDS) and, while HIV-2 is mainly restricted to the African continent, HIV-1 is distributed worldwide (DJ Hu et al. 1996 JAMA 275: 210-216). {P} Keywords HIV-1 polymorphism - molecular epidemiology - HIV-1 B subtype

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