 
February 5, 2008
Twice Weekly Use of Antiretrovirals May Be Effective as PrEP
New results from a federal study by researchers at the Centers for Disease Control and Prevention (CDC) confirm that monkeys given drugs used for the treatment of HIV-positive patients on a daily basis were mostly prevented from contracting a monkey version of HIV. The study also found that it was possible for monkeys to be protected from contracting the virus if they received the drugs only twice a week, reports The San Jose Mercury News (mercurynews.com, 2/4).
The study, published in the February issue of the journal PLoS Medicine, focused on Gilead Science’s HIV medications Viread, Emtriva and Truvada (a combination of Viread and Emtriva).
One researcher, Walid Heneine, says that the drug formulation of Truvada used in the monkey study contained more Viread than the formula used by humans, and that it’s too early to know if the drug could effectively block HIV in people.
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