title: Contacts of cases of active pulmonary tuberculosis.
mesh_terms: D000293:Adolescent; D000328:Adult; D001955:British Columbia; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D012525:Saskatchewan; D014397:Tuberculosis, Pulmonary / Q000453:epidemiology / Q000635:transmission*