so if you're adherent to truvada, the data says it's 95% to 100% effective. that's an extraordinary breakthrough. condoms have shown 75% to 80% effectiveness. >> prior to this, the only other method for prevention has been condoms and and stinance? >> correct. and we've had to rely on human behavior for 30-some years, and that's a really hard thing to change. to have a medical intervention is keeping people from being at risk is amazing. >> we'll talk more about that and about the walk. stay with us. >>> welcome back. we're talking about the aids walk coming up on october 25th here in the nation's capital, the walk to end hiv. and we ended the last segment talking about this new prevention treatment. it's prep. truvada. nick, you've been taking this medication for the past three years? >> yes, i have. about three years ago i learned that i could have been exposed to hiv and felt, how could this happened to me? i was smart. but in the process, i realized that that experience was not unique to myself. and some habits are hard to break. i could continue down thi

he says the pill called truvada. also known as 'prep'. will help prevent the spread of h-i-v. this is a path to eliminating any new hiv infections in san francisco. if implemented across the board i'm told this could be a game changer. >> this is specifically focused on hiv. we're not here to replace condoms we want people to use condoms and be responsible. people who are at-risk of contracting h-i-v, that want to protect themselves from getting the virus can take prep, also known as pre exposure prophylaxis once a day. >> it's not only something that can help gay men, transgender men and women. we have also heard from many women who have used truvada prep to have unprotected sex with their partner for the purpose of having a baby. >> there's a lot of controversy about it but i believe anything you can do to prevent a lot of people from being sick and dying, we should do it. it should be available to everybody. the number of infections in gay men, african americans, latinos and transgender people continue to rise. supervisor david campos says not only will this pill help stop

. >> "america tonight"s adam may brought us a look at truvada, the anti-h.i.v. drug for those that can afford it. there's now more to it. what one u.s. city is considering to make it available to all. before the end of the hour, adapting exposurures. how tradition has been challenged, and why it risks putting some out of business. >>> so much focus on the ebola epidemic, another long-term health crisis stepped away from the headlines. years of effort in the fight against aids brought us treatment and a drug that shows promise in preventing it. "america tonight"s adam may told us about the drug, truvada, and reports that san francisco is weighing a controversial proposal to pay for it, giving it to anyone that wants it. there's more to it as we learn from "america tonight" adam may's original report. >> dame job jacob says that little blue pill changed his sex life, it's not the little blue pill you may be thinking of. it is troouf arda, a new class of duration preventing h.i.v. infection 99% of the time if taken as directed. jacobs, a therapist in new york city

. >> "america tonight"s adam may brought us a look at truvada, the anti-h.i.v. drug for those that can afford it. there's now more to it. what one u.s. city is considering to make it available to all. before the end of the hour, adapting exposurures. how tradition has been challenged, and why it risks putting some out of business. >> on tech know, cars, the science behind... keeping us safe on the road... >> oh! >> oh my god! >> the driving force behind these new innovations >> i did not see that one coming... >> tech know's team of experts show you how the miracles of science... >> this is my selfie, what can you tell me about my future? >> can affect and surprise us... >> sharks like affection... >> tech know, where technology meets humanity only on al jazeera america >>> so much focus on the ebola epidemic, another long-term health crisis stepped away from the headlines. years of effort in the fight against aids brought us treatment and a drug that shows promise in preventing it. "america tonight"s adam may told us about the drug, truvada, and reports that sa

the group, known as the human rights campaign, calls the pill truvada "a critically important tool" in fighting hiv, the virus that causes aids. the group is also urging manufacturers to cut the price of the drug, that ranges from 8,000 to 14,000 a year. for more about west africa's fight against ebola, we are for more about west africa's fight against ebola, we are joined now from washington via skype by helene cooper of the new york times. she recently returned from liberia. i understand you were out and about when you first got home. in fact, you were on meet the press last sunday. i understand you are on some sort of self-imposed quarantine now. >> it is sort of a modified quarantine as well, i came back from liberia on saturday and i went on meet the press. i am not symptomatic, i have been taking my temperature and all of that but then i started thinking about it when it is time to go back to the office and go to the pentagon which is where i actually work often and i realized that a lot of people were going to feel weird around me, so i worked it out with the times that i would

. >> you look at truvada which beat by 10%. seven of their other drugs did much better. i think the quarter was fine. we've seen gilead sell off to end quarters and each time over the ensuing weeks the stock has rallied. we made an all-time high of $114 and change. maybe gets a little lower than this but the story is still intact to me. >> up next, what does our own brian kelly have in common with none other than kim kardashian? more -- >> stand up. >> more than you think. we'll unveil it after the break. later is fast food chain fat burger looking to become the next low fat burger? our own jane wells has the skinny on the chain's latest push towards healthy. ♪ there's confidence... then there's trusting your vehicle maintenance to ford service confidence. our expertise, technology, and high quality parts means your peace of mind. it's no wonder last year we sold over three million tires. and during the big tire event, get up to $140 in mail-in rebates on four select tires. ♪ an unprecedented program arting busithat partners businesses with universities across the state.