Significance of the tuberculin reaction.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005189:False Positive Reactions; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D009161:Mycobacterium / Q000145:classification; D012572:School Health Services; D013223:Statistics as Topic; D014374:Tuberculin Test; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis / Q000453:epidemiology