近年来，不动杆菌感染有增加趋势，院内呼吸道感染尤为明显［１］。为探讨其致病特点，我们分析了１９９７年１月～１９９７年１２月间２８例不动杆菌肺部感染病例，报告如下：临床资料１．诊断标准：具有呼吸道感染的临床表现；胸片有浸润性炎症病灶或肺纹理增多；连续２次或 In recent years, there is an increasing trend of Acinetobacter infection, especially in the hospital respiratory tract infection [1]. To investigate its pathogenicity, we analyzed 28 cases of Acinetobacter pulmonary infection from January 1997 to December 1997, the report is as follows: Clinical data 1. Diagnostic criteria: the clinical manifestations of respiratory infections; chest infiltration of inflammatory lesions or increased lung markings; 2 consecutive or