Truvada pill urged for AIDS prevention after promising studies

Trials in Africa show the once-a-day Truvada pill can prevent heterosexual transmission of HIV. Advocates urge the FDA to approve it for such use.As the U.S. Food and Drug Administrationweighs approval of a radical new method of AIDS prevention — a prescription pill taken once a day — advocates say the results of experimental trials in sub-Saharan Africa argue strongly for the drug's adoption in the United States.

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