The AP recently reviewed current research on the effectiveness of vaginal microbicides, gels that provide prophylactic protection from HIV infection.
These gels promise to be an amazing tool in the fight against HIV, especially in areas of the world where condoms are 1) not easily accessible/available 2) not allowed to be used for a variety of reasons (religious edict, cultural taboo/condemnation, et cetera). Consequently, vaginal microbicides, like the female condom, have promised to provide a “women-controlled protection” believed to be key in fighting the HIV/AIDS epidemic.
However, trials of numerous microbicide continue to end in disappointment, baffling researchers and frustrating activists looking for another preventive measure in their armamentarium against HIV:
“Frankly, blocking transmission of the virus appears to be a lot harder than anyone understood it would be at the beginning,” says meeting co-chair Dr. Sharon Hillier of the University of Pittsburgh and a principal investigator of the Microbicide Trials Network.
Similar trials looking at rectal microbicides have been equally disappointing.
As things stand now, I cannot help but ask “when will the research deliver?” On the Global Campaign for Microbicides website, they have a section describing how microbicides work. Yet, as you read, you get the impression no one knows how they work…because they don’t. There have been no proof-of-concept studies, there has been little date supporting the effectiveness of any of the trials. Essentially, the research seems to be driven by the ideal of a microbicide, by the idea of “how great it would be if we had a preventive gel.” I can’t help but be a little cynical as more and more research dollars are pumped into a preventive measure that continues to not only prove ineffective but also puts people at increased risk of HIV infection.
So, again, I ask, “when will they deliver?” Or perhaps a better question is to ask, “will they ever deliver?”
At some point, we will need to step back, look at the basic science of the immune response and that data that continues to pour in from microbicide trials and see that maybe microbicides won’t be the next magic bullet against HIV. We need to package HIV prevention and not hope for one great prevention.