Slide 119 Epidemiologic Basis of Tuberculosis Control
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This long-term follow-up of tuberculosis sanatorium patients in the pre-chemotherapy shows the large difference between case fatality from sputum smear-positive ("open" tuberculosis) and sputum smear-negative ("closed" tuberculosis).

Similar to the previous studies, fatality from sputum smear-positive tuberculosis approximates 80%, while that of sputum smear-negative tuberculosis does not exceed 20%. During the first year following diagnosis of the latter, fatality is virtually nil.

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Last update: September 10, 2010