我院 1990～ 1996年住院患者有呼吸道感染的表现、痰培养连续 2次以上克雷白样菌阳性的老年患者 5 2例 ,现将其临床特点分析报道如下。1　 临床资料1.1　一般资料　本组患者诊断依据 1990年全国肺部感染学术会议标准 ,占同期老年住院肺炎 32 1% ,占同期克雷白杆菌肺炎 6 1 2 % In our hospital from 1990 to 1996 the performance of respiratory infections in hospitalized patients, sputum culture more than 2 consecutive cases of Klebsiella pneumonia positive elderly patients 52 cases, now its clinical features are reported as follows. 1 Clinical data 1.1 General information The diagnosis of this group based on the 1990 national conference of pulmonary infection standard, accounting for 32.1% of elderly hospitalized pneumonia over the same period, accounting for the same period Klebsiella pneumonia 61.2%