Praphan Phanupak is Professor in Immunology and the Director of the Thai Red Cross AIDS Research Centre (TRC-ARC). He talks about the incidence and prevalence of HIV infection in different parts of Thailand and about human experiments on Thai drug users.

Dr George Galasso is working on HIV vaccines at NIAID. Here he talks about the scientific challenges of HIV/AIDS and the chances of developing a vaccine. He believes that one of the main focuses in HIV/AIDS research still is to find treatment for opportunistic infections.