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A comparison of HIV‐1 and HIV‐2 infections in hospitalized patients in Abidjan, Côte d'lvoire

In late 1988, a cross-sectional study of 1715 adult medical patients hospitalized in Abidjan, Côte d'lvoire, west Africa, showed an overall prevalence of HIV infection of 46% in men and 28% in women. On the basis of specific testing by whole virus enzyme-linked immunosorbent assay (ELISA), Western blot and synthetic peptide ELISA, HIV-1 infection was found in 25%, HIV-2 infection in 4%, and reactivity to both viruses in 11% of male and female patients combined. People infected with HIV-2, as well as those who were reactive to both HIV-1 and HIV-2, had a frequency of AIDS-associated symptoms and signs similar to that in HIV-1-infected patients, and significantly greater than that in seronegative patients. The significance of dual reactivity, and the natural history and disease spectrum of HIV-2 infection, require further study. Synthetic peptide ELISA is valuable for specific serodiagnosis of HIV-1 and HIV-2 infections. Advanced HIV-2 infection in hospitalized patients in Abidjan is associated with the same symptoms and signs as HIV-1 infection.