AIDS vaccine trial exceeds expectations

An experimental AIDS vaccine of Merck & Co. has exceeded expectations and led to a double enrollment in the trial to 3,000, researchers said.

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<p><a href="http://www.physorg.com/news6739.html">AIDS vaccine trial exceeds expectations</a></p> <p>An experimental AIDS vaccine of Merck & Co. has exceeded expectations and led to a double enrollment in the trial to 3,000, researchers said. </p>