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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 contamination of Legionella in Beijing and provide a scientific basis for the prevention and control of Legionnaires’ disease. Methods Using descriptive epidemiological methods, the results of Legionella surveillance in Beijing were analyzed. Statistical analysis using SPSS13.0 software. Results A total of 1947 samples were collected from 1998 to 2006 in Beijing. The positive rate of Legionella was 14.07%. The positive rate of Legionella in stage 1 was significantly higher than that in other stages. Among the monitored systems, the positive rate of Legionella pneumophila was the highest 24.91%. 1998 ~ 2006, Beijing Legionella disease outbreak 7, the main pathogen to Legionella pneumophila. Conclusion Legionella contamination, disinfection and water treatment can effectively reduce the contamination rate of Legionella in Beijing. However, comprehensive prevention and control measures are still needed to reduce the risk of Legionella infection.