Among 107 subjects who provided 3 gastric washing specimens and at least 3 induced sputum specimens, 43% had cultures positive for Mycobacterium tuberculosis.

• 在107例受试者中，有3次洗胃样本以及至少3次诱导咳痰样本，43%25受试者的结核分枝杆菌培养阳性。