Launching his agency's 2008 report on the global AIDS epidemic, Peter Piot, UNAIDS executive director, yesterday urged more action to prevent the spread of the disease among gay men who have unsafe sex and stressed the importance of working with affected communities.

"All over Asia there are now epidemics of HIV in men who have sex with men of the same magnitude that we saw in this country 25 years ago," Piot said.

"That is something that has been detected fairly recently. There is not enough action yet but we are now starting programmes," he added.

Paul De Lay, director of Evidence, Monitoring and Policy at UNAIDS, said the HIV epidemic among gay communities in Asia was not new, but that it had recently reached the levels seen in cities such as San Francisco at the end of the 1980s when HIV infections reached their peak.

He said it could be due to a number of factors, including less funding for programs that target men who have sex with men and the fact that there were new groups who were less aware of the risks of unprotected sex.

"Asia has recognised populations of men who have sex with men for quite some time," he told AFP. "The epidemic in these populations started in the mid-1990s. What we see now is a resurgence."