AIDS 백신 개발

 

AIDS Vaccine. For the first time, an experimental vaccine shows promise in preventing infection with the AIDS virus. Odd couples. The stories of the orangutan and the dog, the crow and the kitten. Could these animals really be best friends? And what the study of twins can tell us about the process of aging. From ABC News headquarters, this is World News with Charles Gibson. We’re going to turn next to what may be a watershed분수령 event in the effort to find a vaccine to prevent the AIDS virus. Researchers in Thailand say a major medical study found that an experimental vaccine cut the risk of infection by nearly a third. So how significant is this? Here’s Dan Harris.

 

Scientists have been working on an AIDS vaccine for more than 20 years. During which time, the disease has killed 32 million men, women and children. There have been so many setbacks역행, so many failures that some thought today might never come. “It’s the first time that we have ever had a positive effect of any type with an HIV vaccine in a human clinical trial.” But the optimism is tempered조절된 완화된. “It’s not the kind of thing that we could say we now have a vaccine that’s ready for prime time.’

 

And here’s why. This study was carried out in Thailand and involved more than 16,000 volunteers, all young adults. Half of them were given a placebo위약. Half were given the vaccine. Of the roughly 8,000 people who received the placebo, 74 became infected. Of those who got the vaccine, 51 became infected. So while the vaccine worked, it only reduced infections by 31%. “This is not a vaccine that would be marketed right now. There’s still a lot of work that has to be done.”

 

There are still a lot of unanswered questions here. Scientists don’t even know exactly how or why this new vaccine works. It was actually created on a hunch육감 by combining two other vaccines that had both previously failed in clinical trials. And while the vaccine was somewhat effective against the strain of AIDS prevalent널리 퍼진 in Thailand, it’s unclear if it will work against strains in, say, the US or Africa.  But there is no question that this is a much-needed victory in a disease that infects nearly 75,000 people everyday. “If we can stop those new infections again, we have a chance to spare millions of millions of people.” As one scientist said today, it’s not the end game, this is the beginning. Dan Harris, ABC News, New York.

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