AIDS Vaccines To Improve In the Future

New York Times

An experimental AIDS vaccine tested on some 2,500 drug users in Thailand failed to protect them from becoming infected with H.I.V., the virus that causes AIDS, the vaccine's developer said on Wednesday.

The poor results were widely expected because the developer, VaxGen Inc., said earlier that its vaccine had not worked in a larger North American study.

Two dozen other vaccines are being tested on 12,000 human volunteers, but none have advanced as far as VaxGen's.