Important note: Information in this article was accurate in 2005. The state of the art may have changed since the publication date.
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United Press International - September 23, 2005
The trial, conducted in healthy volunteers to determine their immune response to the vaccine, might indicate whether the immune reactions could prevent or control AIDS, reported the Wall Street Journal Friday.
The vaccine, called MRKAd5, uses an adenovirus -- a common-cold virus -- as a missile armed with man-made copies of three AIDS virus genes, has resulted in a stronger-than-expected immune response.
MRKAd5 has boosted such killer T-cells, which seek and destroy human cells infected by HIV by 50-fold to 100-fold -- an immune reaction comparable with successful vaccines for diseases like smallpox or measles, according to Lawrence Corey, principal investigator of the HIV Vaccine Trials Network in Seattle.
However, the vaccine doesn't elicit antibodies, another key element of immune protection.
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