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Global Health
July 18, 2017

Vaginal Microbiome Affects Efficacy of HIV Microbicide

JAMA. 2017;318(3):231. doi:10.1001/jama.2017.9091

Certain species of vaginal bacteria can inhibit the efficacy of the topical microbicide tenofovir, which is used to prevent HIV, by breaking it down before it is absorbed, reports an international team of investigators in Science.

Women using the vaginal antiretroviral gel tenofovir to prevent acquisition of HIV have experienced inconsistent results. Variability in adherence has been shown to be a factor in the diverse trial outcomes, but little is known about the biological factors that may contribute to variable results.

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