A total of 429 MSMUI were recruited, of whom 153 were recruited from responding to the banners, 176 from collected contact details posted online, and 70 were referred by friends who had participated in the study. Of the 429 participants, 420 provided a blood specimen (of the 9 who didn’t provide a blood specimen, 6 were hematophobic and 3 believed they had no risk for infection thus refused to provide a sample) and 399 completed a questionnaire (30 participants went to the VCT clinics when investigators weren’t present, so they did not complete the questionnaire but provided a blood sample and basic socio-demographic information).