Exogenous reinfection in tuberculosis.
D002908:Chronic Disease; D004777:Environment; D005260:Female; D006801:Humans; D008297:Male; D009161:Mycobacterium / Q000472:pathogenicity*; D009169:Mycobacterium tuberculosis / Q000472:pathogenicity; D014374:Tuberculin Test; D014397:Tuberculosis, Pulmonary / Q000453:epidemiology / Q000209:etiology* / Q000276:immunology