Dr. Coates joined the Division of Infectious Diseases at the David Geffen School of Medicine at UCLA in 2003. His areas expertise are HIV prevention, the relationships between prevention and treatment and between biological and social/behavioral prevention strategies, and HIV policies. His domestic work has focused on men who have sex with men, and he has recently completed a nationwide clinical trial of an experimental HIV-preventive intervention focused on this population. In addition Dr. Coates is directing a clinical trial in South Africa, Zimbabwe, Tanzania, and Thailand to determine the impact of strategies for destigmatizing HIV on HIV incidence community-wide. He is co-principal investigator of the NIAID-funded HIV Prevention Trials Network (HPTN).