Viread (tenofovir) and Truvada (tenofovir plus emtricitabine), when either was used as daily pre-exposure prophylaxis (PrEP), reduced the risk of contracting HIV by more than two thirds among mixed-status heterosexual couples—and up to 90 percent among those with laboratory evidence of having actually taken their allotted preventive treatment—according to new results from the Partners PrEP study reported on Tuesday, March 6, at the 19th Conference on Retroviruses and Opportunistic Infections (CROI) in Seattle.
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