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Herpes medication does not reduce risk of HIV transmission
Date:5/8/2009

ant couples, many of whom are in stable partnerships and unaware that one partner has HIV and the other does not. Genital herpes is thought to be a factor in a substantial proportion of new HIV infections in Africa.

In the primary analysis of HIV transmissions determined by laboratory testing to have occurred within the couple and not acquired from an outside partner, there were 41 infections in the acyclovir arm and 43 in the placebo arm not a significant difference. Acyclovir suppressive treatment reduced the frequency of genital ulcers by 73% and the average amount of HIV in the blood (by 0.25 log10 copies/milliliter, a reduction of 40%), compared to the placebo arm.

"The Partners in Prevention Study is a direct assessment of the impact of herpes suppression on HIV transmission," explained Dr. Connie Celum, the leader of the study and a UW professor of Global Health and Medicine in the Division of Allergy and Infectious Diseases. "A clinical trial of genital herpes suppression in HIV discordant couples is the most direct way to see if we can make a person less infectious and less likely to transmit HIV to their partner. The study did find that acyclovir significantly reduced genital ulcers due to HSV-2 and modestly reduced HIV levels in the blood, consistent with what the preliminary studies of HSV-2 suppressive treatment had shown. However, it appears that these effects were not sufficient to reduce the risk of HIV transmission."

The study also determined whether acyclovir can slow HIV disease progression among individuals with HIV and HSV-2 who also have CD4 T-cell counts that are too high for HIV antiretroviral treatment under current national guidelines. Specifically, the investigators studied the number of participants in the acyclovir and placebo arms whose CD4 T-cell counts declined to below 200, who started HIV medications, or who died. In this analysis, HIV disease progression was slowed by 17% by acyclovir, an effect that was s
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Contact: Mary Guiden
mguiden@u.washington.edu
206-616-3192
University of Washington
Source:Eurekalert

Page: 1 2 3 4

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