Fig. 1

Flow of participants enrolled from four HIV testing centres in Tanzania through 3.5 years of follow up. *Lost to study follow up is defined as participants who no longer attended any study visits or missed their last 2 scheduled study visits. †Participants who followed at study visits but reported never attending an HIV care and treatment center (CTC). **Eligibility for antiretroviral therapy (ART) determined according to local guidelines at the time patients were being followed, described in methods