Experimental AIDS Vaccine Fails Crucial Experiment
A promising experimental vaccine to prevent the AIDS virus has failed in a crucial experiment, with volunteers becoming infected with HIV anyway, leading the drug developer to halt the study.
Merck & Co. said Friday that it is ending enrollment and vaccination of volunteers in the large international study, which is partly funded by the National Institutes of Health.
It was a significant setback in the daunting quest to develop a vaccine to prevent AIDS. Merck's vaccine was the farthest along and was closely watched by experts in the field.




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AP | September 21, 2007 06:44 PM