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A number passengers on Malaysian Airlines flight 17 downed in Ukraine this week were AIDS researchers, health care workers and activists. They were in route to a conference in Melbourne set to begin tomorrow. One of the major topics to be discussed at that gathering is expanding the use of the pill that prevents HIV. Truvada has been shown to be highly effective at preventing new infections. Public officials in New York are ramping up efforts to distribute the drug widely, but not everyone thinks that's a good idea, as NPR's Joel Rose reports.
JOEL ROSE, BYLINE: The drug Truvada has been around for a decade as a treatment for people who are already HIV-positive. It's only in the last few years that it's also been approved to prevent transmission of HIV. That's why Damon Jacobs is taking it.
DAMON JACOBS: I had been newly single after being in a relationship for seven years, and found that people were not using condoms in 2011 the way they had been in 2001.
ROSE: Jacobs is a therapist in New York City. He's HIV-negative. He started taking Truvada three years ago for pre-exposure prophylaxis - also known as PREP. Since then, Jacobs says he no longer uses a condom every time he has sex, and yet, he's not worried about getting HIV.
JACOBS: I didn't fully understand what it meant to live in fear every time I had sex. And it wasn't until about a year after I was using PREP that I had the experience of pleasurable intimacy and realized I'm not afraid anymore.
ROSE: Studies have shown that Truvada can be more than 90 percent more effective against the transmission of HIV, as long as it's taken every day. The drug has been approved for PREP by the FDA and endorsed by the Centers for Disease Control and Prevention.
At New York's Gay Pride parade last month, Gov. Andrew Cuomo announced that his state will be the first to make Truvada part of its ambitious plan to cut new HIV infections.
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GOVERNOR ANDREW CUOMO: The state of New York, which in many ways was ground zero of the HIV and AIDS crisis when it first started, I think it's fitting that New York should then be the state that is the most aggressive in eradicating this disease and actually ending this disease.
MICHAEL WEINSTEIN: It's a very dangerous experiment.
ROSE: Michael Weinstein is president of the AIDS Healthcare Foundation and a prominent critic of Truvada. As Weinstein points out, Truvada only works when you take it most every day. And he's worried about what will happen to those who don't.
WEINSTEIN: If people are taking this medication, they're definitely not going to use condoms. And if they're not taking it regularly, they're not going to be protected when they think they are. We would have many, many more infections in this country - particularly among men who have sex with men - if no one was using condoms. And we can do harm by telling people that you can pop this pill.
ROSE: But public health officials in New York say that pill could be key to cutting the number of new HIV infections - a number that is held roughly steady for the past decade. Daniel O'Connell directs the AIDS Institute at the New York State Department of Health. He says it's time to consider new approaches.
DANIEL O'CONNELL: We're trying to do education and give options to people in terms of staying safe. So for some people, condoms are that. For some people, monogamy is that. But for some people, the only answer that's going to work for them right now is PREP.
ROSE: Truvada is not the cheapest option. The drug costs $1,300 a month, though it is covered by most insurance plans and Medicaid. But those who are most at risk of getting HIV often have limited access to health care. Perry Halkitis is a professor at New York University.
PERRY HALKITIS: I will believe that PREP is truly going to be effective in the gay community if it gets in the hands of those who need it most in the gay community - who are young, black, gay men. And I have no evidence to suggest that it's getting there now.
ROSE: So far, the number of people anywhere taking Truvada for PREP seems to be small - just a few thousand nationwide. Prominent AIDS activist Larry Kramer, the founder of Gay Men's Health Crisis, has publicly questioned why anyone would want to put, quote, "poison," unquote, into their body when they could wear a condom instead.
But public health officials like Daniel O'Connell say the side effects are minor - especially compared to the potential benefits. Joel Rose, NPR News, New York.