Scientists see AIDS vaccine within reach after decades

About 2880 candles are seen lit during a World AIDS Day event in JakartaCHICAGO (Reuters) – At an ill-fated press conference in 1984, U.S. Health and Human Services Secretary Margaret Heckler boldly predicted an effective AIDS vaccine would be available within just two years. But a string of failed attempts – punctuated by a 2007 trial in which a Merck vaccine appeared to make people more vulnerable to infection, not less – cast a shadow over AIDS vaccine research that has taken years to dispel. A 2009 clinical trial in Thailand was the first to show it was possible to prevent HIV infection in humans. …



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