Merck tells AIDS vaccine volunteers who got jab
Thousands of people who volunteered to test an experimental AIDS vaccine that may have actually raised the risk of infection will be told if they got the actual shot, researchers said on Tuesday.
Merck & Co. Inc. and academic researchers said they would "unblind" the study, meaning everyone would find out who got the active shot and who got a dummy injection.
Two international trials of the experimental vaccine were stopped in September after it became clear the vaccine did not prevent infection with the AIDS virus.
The trials were conducted in the United States, Peru, Brazil, Dominican Republic, Haiti, Jamaica, Australia and South Africa.
Earlier this month, researchers said they saw some worrying indications that the vaccine somehow raised the risk of infection, although they stressed the vaccine could not itself cause HIV infection.
They had already begun counseling volunteers that they could be at higher risk of HIV, a fatal and incurable virus that causes AIDS...
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