Index Patient and Household Eligibility:  Index patient is eligible for contact investigation (TB patient of any age identified in the facility's National TB and Leprosy Programme (NTLP) TB Treatment Register as initiating treatment or returning for 2-week follow-up) Index patient or legal guardian agrees to study procedures in addition to routine contact investigation Index patient has at least 2 self-reported household contacts age 15 or above Household is within the boundaries of the Kampala Capital City Authority, Uganda Does not have multi-drug resistant (MDR) TB  Contact Participant Eligibility:  Household contact age ≥15 years Agrees to study procedures in addition to routine contact investigation