Pill taken before, after sex may prevent HIV: study

Pill taken before, after sex may prevent HIV: studyAn HIV prevention pill taken by gay men before and after sex reduced the risk of virus transmission by 86 percent, according to the results of a clinical trial released Tuesday. Truvada contains HIV treatment drugs tenofovir and emtricitabine, and is made by Gilead Sciences in California. While the latest evidence on the technique known as pre-exposure prophylaxis, or PrEP, is not enough to change guidelines, it was welcomed as a novel approach to HIV prevention. The study "provides the first evidence that an event-driven regimen is effective among high-risk MSM (men who have sex with men) with frequent sex," said Jonathan Mermin, director of the US Centers for Disease Control and Prevention's National Center for HIV/AIDS.



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