Truvada HIV Prevention: Does it Work for High Risk Gay Men? HIV/AIDS: it’s still incurable, and it’s reached epidemic proportions. Since it was first recognized by the United States Centers for Disease and Prevention in 1981, more than 60 million people have contracted the human immunodeficiency virus and nearly 30 million have died of HIV-related causes. Today, about 34 million adults worldwide live with HIV/AIDS, according to the World Health Organization.
About 1.2 million Americans are infected with HIV, and men who have sex with men (MSM) account for the more than half of the 56,000 new cases yearly in the U.S., according to the CDC. Gay men who have five or more sex partners have a particularly high risk.