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[Preliminary survey of human immunodeficiency virus 1, group O in Burundi].

Eight known subtypes of HIV-1 designated A-H collectively comprise group M the major group and are responsible for the AIDS pandemic. Two subtypes very different from those in group M were isolated in Cameroon in 1987 and 1991 and are considered members of group O the outlying subtypes. The authors analyzed 662 HIV-seropositive blood samples collected during February-June 1995 from patients at the University Hospital Center of Bujumbura Burundi. Testing with ELISA Western blot and polymerase chain reaction found no sample to be definitively seropositive for infection with HIV-1 group O. These findings differ from those of researchers in Senegal and Nigeria. Further research is warranted to determine the actual role of HIV-1 group O infection in Burundis HIV epidemic.