PHILADELPHIA (AP) -- For 600 days and counting, monkeys given an experimental new AIDS vaccine have survived with no signs of illness despite exposure to lethal doses of virus, raising hopes that scientists may be headed at last toward an effective vaccine for people.
Several studies presented at an AIDS vaccine conference here Thursday suggest that novel combinations of genes and other immune system stimulators may be able to keep HIV at bay, even if they fail to prevent infection.
Testing in people has just begun, and no one knows if they will truly work. Even if they do, it may take a decade of fine-tuning and large-scale testing before they reach widespread use.
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