This report details the findings of the fifth round of the IBBS conducted among 340 male IDUs in the Kathmandu Valley, recruited using Respondent Driven Sampling (RDS). A structured questionnaire was administered to the respondents at a centrally located survey center. The questionnaire collected information on sexual behavior and HIV/AIDS awareness as well as socio-demographics. After the interview, clinical examinations were conducted by a Health Assistant and blood samples were collected for HIV and syphilis testing by a lab technician. The test results were provided in coordination with pre- and post-test counseling by a trained counselor in the survey center. Download this publication.