Most people infected with human immunodeficiency virus (HIV)and acquired immune deficiency syndrome (AIDS):

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The majority of people infected with HIV/AIDS are heterosexual, with transmission occurring through unprotected sex with an infected partner. While other modes of transmission, such as intravenous drug use and blood transfusions, have contributed to the spread of HIV/AIDS, they are less common than sexual transmission. The geographic distribution of HIV/AIDS varies, with high prevalence rates in certain regions of sub-Saharan Africa, Eastern Europe, and Central Asia, but the majority of the world's HIV-positive population lives outside of Africa. While the initial cases of HIV/AIDS disproportionately affected gay men, the virus now affects individuals of all genders and sexual orientations. Hemophiliacs who received blood transfusions before the 1980s were at high risk of contracting HIV/AIDS, but modern blood screening techniques have significantly reduced this risk.

Most People Infected with Human Immunodeficiency Virus (HIV)and Acquired Immune