an analysis of data from two successive tuberculosis prevalence surveys ( conducted at an interval of 18 months ) in a random sample of villages in bangalore district , south india , has shown that the term `` '' a case of pulmonary tuberculosis '' '' does not represent a single uniform entity , but rather embraces cases of several types , differing considerably in their mortality experience , tuberculin sensitivity , results of x-ray and sputum examinations , and in the reliability of their diagnosis .
C0041296
tuberculosis
C0034131
tubercul