 Seaters are older, more stable, better organized, and have a much higher prevalence of HIV infection than FSWs who roam the streets or part-time sex workers. These communities from 3 to 114 FSWs per site will be aggregated into 18 clusters one cluster was composed of 1-10 FSW communities based on geographical proximity. Over a one-year period, FSWs from these clusters presenting to dedicated clinics will be invited to participate. In addition, field workers will visit FSWs at home or at prostitution sites to provide information about the trial and seek participation. 