惠州市集中空调军团菌污染现状及人群感染调查报告

目的:了解惠州市军团菌的污染现状及人群军团菌的感染程度,为制定预防和控制军团菌感染策略提供依据.方法:采用分离鉴定与ELISA方法,对惠州市186份集中空调冷却塔水进行军团菌分离鉴定,对215例暴露人群及152例对照人群进行军团菌抗体IgG检测.结果:本次调查集中空调嗜肺军团菌检出率为51.3%,共检出62株嗜肺军团菌,其中,LP1型37株、LP2～LP14型25株;215份暴露人群中检出军团菌抗体阳性29份,阳性率13.4%,152份对照人群中检出军团菌抗体阳性7份,阳性率4.6%.结论:惠州市集中空调冷却塔水中军团菌污染现状较为严重,已对暴露人群的健康造成潜在威胁,对这一潜在传染来源应采取立体、有效防范措施.

Huizhou air-conditioning corps bacteria contamination and population survey report

Objective:To investigate the status of the Legionella contamination and infection in crowd in Huizhou City,in order to constitute the prevention and control strategy of Legionella infection.Methods:186 Cooling tower water samples from central air conditioning system in Huizhou City were cultured and then Legionella was isolated and identified;The antibodies IgG against Legionella of 215 dangerous group and 152 control were detected by Enzyme-linked Immunosorbent Assay(ELISA).Results:The detection rate of Legionella pneumophilia in this survey of central air conditioning system is 51.3%,62 strains of Legionella pneumophilia were isolated,among them 37 strains were serovar LP1,and 25 strains were serovar LP2～LP14;There were 29 cases of anti-Legionella positive in the 215 dangerous group,with the positive rate of 13.4%,and there were 7 cases of anti-Legionella positive in the 152 control,with the positive rate of 4.6%;Conclusion:The water in cooling tower of central air conditioning system in Huizhou city has been contaminated seriously with Legionella,and it has already being a latent threat to the health of dangerous group,thus spatial and effective preventive measures to this potential source of infection should be taken as soon as possible.