Chemoprophylaxis.
D000328:Adult; D002648:Child; D002986:Clinical Trials as Topic; D006801:Humans; D007538:Isoniazid / Q000009:adverse effects / Q000627:therapeutic use*; D014397:Tuberculosis, Pulmonary / Q000517:prevention & control* / Q000635:transmission
D007538:Isoniazid