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目的调查公共场所嗜肺军团菌的污染现况。方法 2009年-2014年选取北京市丰台区、南京市、常州市、无锡市和深圳市的公共场所,采集冷却水、淋浴水、自来水、景观水、景观土、空调风管内壁积尘、冷却塔旁土、花卉土、气溶胶,采用巢式PCR法检测样品中的嗜肺军团菌。结果气溶胶、冷却水、自来水、淋浴水、景观水、冷却塔旁土、空调风管内壁积尘、景观土和花卉土的嗜肺军团菌阳性检出率分别为26.6%(129/485)、81.4%(92/113)、17.2%(17/99)、36.4%(39/107)、24.1%(7/29)、51.6%(16/31)、33.8%(46/136)、38.9%(7/18)和24.7%(37/150)。五地区公共场所环境中嗜肺军团菌阳性总检出率差异无统计学意义(χ2=8.907,P=0.063)。结论我国公共场所普遍存在嗜肺军团菌污染。分析不同时间、不同地区嗜肺军团菌污染水平特征,为环境中嗜肺军团菌的污染特征、扩散传播途径研究以及风险预警手段和卫生管理措施制定等提供数据基础。
Objective To investigate the status of Legionella pneumophila infection in public places. Methods From 2009 to 2014, public places in Fengtai District, Nanjing City, Changzhou City, Wuxi City and Shenzhen City of Beijing were selected to collect the cooling water, shower water, tap water, landscape water, landscape soil, Tower of soil, flowers, soil aerosol, the use of nested PCR detection of Legionella pneumophila in the sample. Results The positive detection rate of Legionella pneumophila in aerosol, cooling water, tap water, shower water, landscape water, cooling tower beside soil, dust on the inner wall of air conditioning ducts, landscape soil and flower soil were 26.6% (129/485) , 81.4% (92/113), 17.2% (17/99), 36.4% (39/107), 24.1% (7/29), 51.6% (16/31), 33.8% % (7/18) and 24.7% (37/150). There was no significant difference in the positive detection rate of Legionella pneumophila between the public places in five districts (χ2 = 8.907, P = 0.063). Conclusion Legionella pneumophila contamination is common in public places in China. To analyze the characteristics of Legionella pneumophila contamination in different time and different regions, to provide the data basis for the characteristics of Legionella pneumophila in the environment, the research on the route of spread and spread of the Legionella pneumophila, as well as the methods of risk warning and health management.