Photo by Ken D uncan Australia D r Supang Chantavanich Asian Research Centre for Migration In consortium with W orld Vision Australia and Macfarlane Burnet Centre for Medical Research TA 5881-REG: Preventing HIV/AIDS Among Mobile Populations in the Greater Mekong Subregion Asian D evelopment Bank United N ations D evelopment Progamme Mobility and HIV/AIDS in the Greater Mekong Subregion HIV/AIDS