Jiang Hongmei, Shao Zhujun, Li Jiamning, Zou Mei
Center for Disease Control and Prevention of Dalian, Dalian 116021, China.
Wei Sheng Yan Jiu. 2009 Jan;38(1):76-7.
To inspect the conditions of Legionella pollution in cooling towers of central air conditioning systems and the state of Legionella potential infection of workers in public places in Dalian City in order to study the impact factors related witb Legiondlla organism infection.
From August to September 2005, water sample of 32 cooling towers were randomly collected. Legionella organism in water samples were detected. The blood samples were randomly collected from workers in public places of central air conditioning systems. The micro agglutination test was used for detecting the Legionella antibodies in blood samples.
53.13% of the cooling towers were positive with Legionella pneumophila (Up) serogroup 7, 8, 9 and 10, of which, Lp9 isolates were predominant by 77.78% (N=28). The testing results of Legionella 'antibodies showed that the antibody levels of Legionella were the highest. The results implied there were potential infection of workers in public places of central air conditioning systems.
Legionella pollution exist in cooling towers and the Legionella potential infection were found in workers in public places of central air conditioning systems in Dalian City.
调查大连市公共场所集中空调系统冷却塔军团菌污染状况及从业人员军团菌潜在感染状况,研究与军团菌感染相关的影响因素。
2005年8月至9月,随机采集32个冷却塔水样,检测水样中军团菌;随机采集集中空调系统公共场所从业人员血样,采用微量凝集试验检测血样中军团菌抗体。
53.13%的冷却塔嗜肺军团菌(Lp)血清7、8、9和10型呈阳性,其中Lp9型菌株占77.78%(N = 28)。军团菌抗体检测结果显示,军团菌抗体水平最高,提示集中空调系统公共场所从业人员存在潜在感染。
大连市集中空调系统冷却塔存在军团菌污染,公共场所从业人员存在军团菌潜在感染。