Continuous Disinfection by Monochloramine on Domestic Hot Water System of Health-care Facilities for the Control of Legionella Contamination in Italy
Continuous Disinfection by Monochloramine on Domestic Hot Water System of Health-care Facilities for the Control of Legionella Contamination in Italy作者机构：Legionella Reference Laboratory Department of Medical Surgical Sciences and Advanced Technologies "G.F. lngrassia"University of Catania Catania 95123 Italy Public Health Laboratory LSP ASP& Siracusa Italy Department of Medical Surgical Sciences and Advanced Technologies "G.F. Ingrassia " University of Catania Catania 95123 Italy Hospital 'Umberto I' ASP8 Siracusa 96100 Italy Hospital 'Nuovo Ospedale di Lentini ' ASP 8 Lentini (Siracusa) Italy Sanipur srl Flero (BS) 25020 Italy
出 版 物：《Journal of Health Science》 (健康科学（英文版）)
年 卷 期：2015年第3卷第1期
页 面：11-17页
学科分类：12[管理学] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 10[医学]
主 题：Hospitals Legionella monochloramine.
摘 要：Backgroud： The prevention of Legionella spp. colonization of water distribution systems is a critical issue in healthcare settings and only an effective disinfection of water systems and appropriate environmental surveillance strategies allow to prevent nosocomial legionellosis. Methods： Due to the temporary effectiveness （increase of the temperature of water in boilers and shock hyperchlorination）, the high costs （point-of-use water filters） or the ineffectiveness （hydrogen peroxide, H202） of the previous control procedures, 3 devices （one for each hot water loop） continuously injecting monochloramine have been installed in two different Italian hospitals heavily contaminated by Legionellapneumophila SG3 and SG6. Aim： To evaluate the efficacy of continuous disinfection by monochloramine for control of Legionella on domestic hot water （DHW） distribution system of health-care facilities. Findings： One month after the disinfection of DHW with monochloramine, the load ofL. pneumophila SG3 and SG6 （previous mean count ranging from 103 to 105 CFU/L）, as well as the Heterotrophic Plate Count （HPC） （previous mean count ranging from 〉 10^2 to 〉 10^4 CFU/mL）, decreased at undetectable levels in 100% of the sampling points in the two hospitals. Conclusion： The results suggest that continuous injection of monochloramine on DHW systems can fully control L. pneumophila and HPC in contaminated hospitals since the beginning of its application.
维普期刊数据库