Cohort study of HIV-1 Incidence among clients of the Thai Red Cross AIDS Research Centre, Bangkok, Thailand (A collaboration between SEARCH, The Thai Red Cross AIDS Research Centre and AFRIMS).

This study will assess HIV incidence, risk behavior and willingness to participate in prevention trials in a cohort of 1000 HIV negative subjects at the Anonymous Clinic over a period of 12 months.  The study began in August 2008.