Participants failing to meet a clinic appointment or follow up will be identified and have their study file flagged. If a participant fails to return to clinic within two weeks following a missed appointment, a social worker or peer counselor will attempt to contact the participant to encourage attendance using the contact information provided at enrollment. All attempts at contact will be recorded. If a participant desires to be removed from the study or fails to follow up after 3 consecutive attempts by the peer counselors or social workers to encourage follow up, the participant will be considered lost to follow up. It the study staff is unable to trace the patient for a period of 60 days following a missed appointment, the participant will be considered lost to follow up. If a participant dies in the course of the study, a verbal autopsy will be obtained from family members or household contacts where possible for classification of possible cause of death.