Sixty-nine children with medical comorbidities were treated for tuberculosis (TB) exposure (7), infection (40) or disease (22). The most common comorbidities in children with TB disease were malignancy (23%), cyanotic heart disease (18%), hemoglobinopathies (18%) and autoimmune disease (14%). Ninety-six percent who received TB medications had no adverse events and 98% completed therapy. Two (9%) died of TB.