Merck Pulls Plug On AIDS Vaccine Trials After Experimental Drug Fails
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 participating in the international study, which is partly funded by the National Institutes of Health.



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AP | LINDA A. JOHNSON | September 21, 2007 05:30 PM