WHO urges preventative ARVs for those at high risk for HIV

A nurse draws blood from a South African patient for an HIV testPeople who regularly face a "substantial" risk of HIV infection should take preventative anti-retroviral (ARV) treatment, the World Health Organization said in new guidelines released Wednesday. Some commercial sex workers also face elevated risk of HIV infection. Along with its first-ever endorsement of broad, prophylactic ARV use, the WHO said people who test positive should begin treatment immediately, a departure from past guidelines that called for delaying treatment in certain cases.

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