Africa: Two Clues Revealed About How Thai Vaccine Worked

14 September 2011

Bangkok — Two years ago, an alliance of Thai and US scientists revealed that a huge trial of an AIDS vaccine had for the first time protected some people from HIV - but they didn't know why or how it had worked.

At the International AIDS Vaccine conference in Bangkok yesterday (Tuesday), the same scientists announced that they now had two clues about how the Thailand trial may have worked.

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