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Worldwide, HIV is still largely driven by heterosexual transmission. The majority of new infections in sub-Saharan Africa occur through heterosexual transmission. We have also seen a number of generalized epidemics outside of Africa, such as in Haiti and Papua New Guinea.
Heterosexual transmission continues to drive the epidemic among sex workers, their clients, and their clients' partners. In addition, prisoners, injecting drug users, as well as men who have sex with men, may also engage in heterosexual relationships. In sub-Saharan Africa almost 60% of adults living with HIV were women, 48% in the Caribbean.
