2009—2012年上海口岸空调及供水系统军团菌监测结果分析

目的调查上海口岸公共场所及入出境交通工具水系统军团菌污染情况。方法2009—2012年,在上海口岸逐步开展军团菌(Legionella)监测工作,采集空调水、管网水,进行浓缩培养、菌种鉴定、血清分型,并用SPSS进行统计分析。结果4年来于上海各类口岸采集水样共计435份,军团菌检测总阳性率为5.52%(24/435),空调冷却水阳性率为15.62%(15/96)。24份阳性样本共分离培养军团菌26株,血清分型分类为嗜肺军团菌(L.pneumophila,LP)1型、LP4型、LP6型、LP7型、LP8型、非1型LP。结论我国国境口岸水系统军团菌检测阳性率低于国内其他公共场所。空调冷却水军团菌污染风险最高。口岸卫生监督工作应重视军团菌监测,严格规范清洗消毒有利于控制水系统军团菌的滋生。

Investigation of Legionella at frontier ports of Shanghai from 2009 to 2012

Objective To investigate Legionella contamination of water systems at Shanghai ports and entryexit transport. Methods From 2009 to 2012, water samples from air-conditions and other water systems at Shanghai ports and the entry- exit transport were collected and cultured. The strains of LegioneUa were identified and serotypied. Results Legionella was found in 24 water samples of 435 （5.52%）. The positive rate of air-condition cooling water was 15.62% （15/96）. Among the 24 positive samples, 26 strains Legionella were isolated and serotype classified as： LP1, LP4, LP6, LP7, LP8 and other LP. Conclusion The positive rates of Legionella at frontier ports water systems are lower than that in other public places. The risk of Legionella contamination in air-condition cooling water is higher than that in any other water system. For Legionella control, the regularity health supervision of Legionella is important and standardized cleaning measures should be carried out.