For both retrospective and prospective components of the study, demographic, geographic, HIV and TB risk factor information will be collected on CPCRA patients with confirmed pulmonary or extrapulmonary TB. Mycobacterial culture results will be recorded. Retrospective data will be collected on CPCRA patients with confirmed tuberculosis who have been diagnosed since January 1992 until the time of site registration. Prospective data will be collected on CPCRA patients with confirmed tuberculosis diagnosed during the period of 1 to 2 years following site registration.