Google, By AFP
[ This article offers a good overview of the data behind studies around pre-exposure prophylaxis]
Volunteers who responded most to a cocktail of antiretroviral drugs in an HIV prevention trial among gay men had a reduced risk of 92 percent of being infected by the AIDS virus, researchers said on Wednesday.
They presented the work as a last-minute, or "late-breaker", contribution to the world forum on AIDS science in Rome.
The research looked at a group of men who took part in a major trial called iPrEx HIV Prevention Study.
iPrEx explored the idea that an uninfected person taking daily AIDS drugs could be shielded from the human immunodeficiency virus (HIV), a novel approach called pre-exposure prophylaxis, or PrEP.
The overall findings, published last November, found that use of a drug called Truvada reduced HIV infections by 44 percent compared with a dummy pill, also called a placebo.
The new study looked at a sub-set of men who had the highest concentrations of the drug in their blood -- a telltale that they had been highly disciplined about taking the pill and that their system had also absorbed it better.
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