Infection with retroviruses other than HIV-1 in Spain: a retrospective analysis for HIV-2, HTLV-I, and/or HTLV-II.

HIV-2, human T-cell lymphotropic virus (HTLV)-I, and HTLV-II infections are currently circulating in Spain with no evidence of an increase in the number of reported cases over time. Up to June 2002, a total of 106, 53, and 460 cases of HIV-2, HTLV-I, and HTLV-II infection, respectively, have been identified in Spain. Most HIV-2-infected and HTLV-I-infected individuals are immigrants who come from endemic areas or are Spaniards with a past history of travel to or sexual contacts with persons originating in those areas. In contrast, HTLV-II infection is mainly limited to native intravenous drug users who are frequently coinfected with HIV-1.