Saliva samples were obtained for anonymous rapid HIV screening among interviewees. Oral fluid HIV was done testing using the OraSure Oraquick HIV-1/2 kit (Orasure Technologies, Bethlehem, PA, USA), licensed by the US FDA, with a sensitivity of 99.1% for oral fluid (compared to 99.7% with serum), and a specificity of 99.6% with oral fluid (compared to 99.9% with serum) [14]. This HIV screen was for study purposes, not for confirmative diagnosis of HIV infection: participants were encouraged to seek appropriate venues for HIV counseling and testing. Study Instrument and Interviews