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目的了解北京市丰台区使用集中空调的公共场所嗜肺军团菌污染状况及从业人员嗜肺军团菌感染水平。方法于2012年7—9月采集北京市丰台区20家使用集中空调的公共场所环境样品进行嗜肺军团菌的巢氏PCR检测,于2012年12月—2013年1月对集中空调公共场所701名暴露人群和非集中空调场所440名对照人群进行血清嗜肺军团菌1~7IgG抗体检测。结果空气、景观水、室外景观土、室内花卉土及作为对照的土壤样品中均未检出嗜肺军团菌。冷却水、自来水、积尘、淋浴水中均检出嗜肺军团菌,阳性率分别为84.2%,10.9%,8.7%,3.6%。暴露组和对照组血清嗜肺军团菌1~7IgG抗体活力中位数分别为13、11U/ml,血清嗜肺军团菌抗体阳性率均为1.4%,差异均无统计学意义(P>0.05)。结论本次调查的公共场所集中空调系统存在嗜肺军团菌污染,需采取防治措施。
Objective To understand the status of Legionella pneumophila infection in public places using centralized air conditioners and the level of Legionella pneumophila infection among employees in Fengtai District of Beijing. Methods Totally 20 detection samples of Legionella pneumophila in public places in Fengtai District of Beijing from July to September in 2012 were collected for detection of Legionella pneumophila. From December 2012 to January 2013, air-conditioned public places 701 A total of 440 control subjects with exposed and non-concentrated air conditioners were tested for Legionella pneumophila 1-7GG antibodies. Results Legionella pneumophila was not detected in the air, landscape water, outdoor landscape soil, indoor flower soil and the control soil samples. Legionella pneumophila were detected in cooling water, tap water, dust accumulation and showering water, the positive rates were 84.2%, 10.9%, 8.7% and 3.6% respectively. The median activity of 1 ~ 7 IgG antibodies against Legionella pneumophila in the exposed and control groups were 13 and 11 U / ml respectively, and the positive rate of L. pneumophila antibody was 1.4% (all P <0.05) . Conclusion The investigation of public places centralized air-conditioning system Legionella pneumophila contamination, need to take prevention and treatment measures.