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目的了解深圳公共场所水系统嗜肺军团菌污染现状,为卫生监督管理提供依据。方法依照《公共场所集中空调通风系统卫生规范》附录A方法,随机采集本市177家公共场所冷却水、冷凝水、淋浴水、泳池水、生活饮用水共500份水样,检测嗜肺军团菌及其菌型。结果冷却水、冷凝水、淋浴水嗜肺军团菌检出率分别为11.0%(28/255)、1.1%(2/176)、30.0%(12/40),泳池水、生活饮用水未检出嗜肺军团菌;酒店、公共浴室、候诊室、地铁站冷却水嗜肺军团菌检出率分别为18.1%(19/105)、4.0%(1/25)、31.8%(7/22)、0.1%(1/103),差异有统计学意义(χ2=11.74,P<0.05);分离出44株嗜肺军团菌,菌型以LP1型为主,占70.5%(31/44),LP3型、LP6型分别占2.3%(1/44)、27.2(12/44)。结论本市公共场所空调冷却水和冷凝水、淋浴水受嗜肺军团菌污染,存在健康隐患,应加强空调系统和淋浴-热水系统的清洗消毒。
Objective To understand the current status of Legionella pneumophila contamination in water systems in public places in Shenzhen and provide the basis for health supervision and management. Methods A total of 500 samples of cooling water, condensate water, shower water, swimming pool water and drinking water were collected from 177 public places in this Municipality according to Appendix A method of Hygienic Standard for Central Air Conditioning Ventilation System in Public Places to detect Legionella pneumophila And its type. Results The detection rates of Legionella pneumophila in cooling water, condensing water and showering water were 11.0% (28/255), 1.1% (2/176), 30.0% (12/40), respectively. The swimming pool water and drinking water were not detected The detection rate of Legionella pneumophila was 12.1% (19/105), 4.0% (1/25) and 31.8% (7/22) respectively in the cooling water of hotels, public baths, waiting rooms and subway stations, , And the difference was statistically significant (χ2 = 11.74, P <0.05). Forty-four strains of Legionella pneumophila were isolated and the predominant strains were LP1, accounting for 70.5% (31/44) LP3 and LP6 accounted for 2.3% (1/44) and 27.2 (12/44), respectively. Conclusion In this city public places air conditioning cooling water and condensate water, shower water contaminated by Legionella pneumophila, there are health risks, should be strengthened air-conditioning system and shower - hot water system cleaning and disinfection.