Chemoprophylaxis of tuberculosis.
D000995:Antitubercular Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007538:Isoniazid / Q000008:administration & dosage / Q000627:therapeutic use*; D014397:Tuberculosis, Pulmonary / Q000517:prevention & control*
D000995:Antitubercular Agents; D007538:Isoniazid