BANGKOK (AFP) – – An experimental AIDS vaccine has for the first time cut the risk of infection in humans in what scientists Thursday called a “breakthrough” in the quarter-century fight against the epidemic.

The vaccine reduced the chance of being infected by a third, researchers announced after the world’s largest trial of 16,000 volunteers, carried out by the US Army and Thailand’s Ministry of Public Health.

The surprising result comes after years of fruitless attempts by the medical world to find an HIV vaccine, including one trial jab that apparently boosted infection rates.

“It is the first demonstration that a vaccine against HIV can protect against infection,” Colonel Jerome Kim of the US military HIV research programme told a news conference in Bangkok via videolink.

“This is a very important scientific advance and gives us hope that a globally effective vaccine may be possible in the future,” he said.

Thai Public Health Minister Witthaya Kaewparadai said the “outcome of this study is a scientific breakthrough.”

The vaccine was a combination of two older drugs that had not reduced infection on their own and the researchers said they were now studying why the two apparently worked together.

Full Story: AFP/Yahoo PH