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HIV/AIDS in South Africa. HIV/AIDS is perceived to be more prevalent in South Africa than anywhere else worldwide. About 12% of the South African population is affected by HIV/AIDS; excluding children, that percentage rises to 18%.
HIV/AIDS. HIV Risk and Prevention. In the United States, HIV is mainly spread by having sex or sharing syringes and other injection equipment with someone who is infected with HIV. Substance use can contribute to these risks indirectly because alcohol and other drugs can lower peopleâs inhibitions and make them less likely to use condoms.