1998～2006年北京市军团菌监测结果分析

Analysis of the results of legionella surveillance in Beijing from 1998 to 2006

目的调查北京市军团菌污染情况,为军团菌病的防控提供科学依据。方法采用描述性流行病学研究方法,对北京市军团菌监测结果进行分析。统计分析采用SPSS13.0软件。结果北京市1998-2006年共采样1947件,军团菌阳性率为14.07%,第1阶段军团菌监测阳性率显著高于其他阶段;在被监测的系统中,中央空调军团菌阳性率最高,为24.91%。1998-2006年,北京军团菌病暴发7起,病原体以嗜肺军团菌为主。结论北京市存在军团菌污染,消毒和水处理可有效降低军团菌的污染率,但仍需采取综合性的防控措施以降低军团菌的感染风险。

Objective To investigate the state of legionella contamination in Beijing in order to provide scientific grounds for the prevention and control of legionnaires＇ disease. Methods A descriptive epidemiological analysis of legionnaires＇ disease was carried out. Statistic analysis was done with SPSS13.0 software. Results One thousand and forty-seven samples were tested and 14.07% were positive for legionella. Positivity was significantly higher in the first stage of surveillance than in other stages. In the surveillance system, positivity for legionella was highest at 24.91% in central airconditioning. From 1998 to 2006, there were 7 outbreaks of legionnaires＇ disease primarily caused by legionella pneumophila. Conclusion Legionella contamination exists in Beijing. Disinfection and water treatment can effectively reduce legionella contamination, but comprehensive prevention and control measures must still be adopted to reduce the risk of legionnaires＇ disease.