A chronic bacterial infection due to Mycobacterium tuberculosis, characterized pathologically by the formation of granulomas. The most common site of infection is the lung, but other organs may be involved.
A case that meets the following criteria:
A case that is laboratory confirmed or, in the absence of laboratory confirmation, a case that meets the clinical case definition
A case should not be counted twice within any consecutive 12-month period. However, cases in which the patients had verified disease in the past should be reported again if the patients were discharged. Cases also should be reported again if they were lost to supervision for greater than 12 months and disease can be verified again. Mycobacterial diseases other than those caused by M. tuberculosis should not be counted in tuberculosis morbidity statistics unless there is concurrent tuberculosis.