A man creates an AIDS awareness ribbon. UNAIDS has said that after 27 years and the loss of more than 25 million lives, the global AIDS pandemic has at last stabilised, but more funds and a breakthrough in disease prevention are needed to sustain this progress and roll back the threat. (AFP/File/Toru yamanaka)

HIV carriers, new infections and AIDS deaths in 2007. One of the largest conferences in the 27-year history of AIDS was set to open in Mexico City with an expected turnout of 22,000 scientists, policymakers and grassroots workers. (AFP Graphic)

File photo shows Thai transvestites and homosexuals taking part in a Gay parade in Bangkok. HIV infection rates among gay men in many parts of Asia are as severe as those which devastated US homosexual communities in the late 1980s, top officials of the UNAIDS agency said here Tuesday. (AFP/File/Pornchai Kittiwongsakul)

A nurse boils water in procedure unit of Regional medical AIDS center in Rostov-on-Don city, Russia. The UN AIDS chief said Tuesday that the global fight against the disease has made progress but voiced concern over rising cases in parts of the world, including Russia and Eastern Europe. (AFP/File/Kazbek Basayev)

A volunteer who works with HIV/AIDS infected people in the Korogocho slum in eastern Nairobi adjusts the intravenous drip on a patient at a health clinic in 2007. Four out of every five Kenyans living with HIV are unaware of their status and about two-thirds of the country's 37 million people have never been tested, a study released Tuesday said. (AFP/File/Simon Maina)