Objective This study was to find out the status of water contamination caused by legionellae in hospitals and probe into corresponding prevention and control measures.

• 目的了解医院军团菌的污染状况,以找出相应防制对策。方法选取12家医院,分别对医院空调冷却塔水、二次供水和管网末梢水(出厂水)进行军团菌检测。