Pill shows up to 70% drop in HIV-infection risk

The result is hailed as the first major AIDS prevention breakthrough. Research was conducted on 2,500 high-risk gay men, but experts believe further study will show effectiveness in other groups.In a finding that is being widely hailed as the first major prevention breakthrough in the AIDS era, researchers have shown that taking a single daily pill containing two HIV drugs can reduce risk of contracting the virus by an average of 44% — and by more than 70% if the subjects take most of their pills.

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