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An investigation of the nontuberculous mycobacteria in drinking water distribution systems in Shanghai |
CHEN Chao1;XU Peng1;LI Jing1;WU Jie1;GAO Qian2;MEI Jian1 |
1.Shanghai Municipal Center for Disease Control & Prevention, Shanghai 200032, China; 2.Key Laboratory of Medical Molecular Virology,Shanghai Medical College ,Fudan University,Shanghai 200032 , China |
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Abstract Objective To survey the distribution of nontuberculous mycobacteria in drinking water distribution systems in Shanghai. Methods Samples of tap water, source water, and treated water from water corporations were collected. The bacteria were collected through filtrating and culturing on Lowenstein-Jensen medium. The nontuberculous mycobacteria were identified by sequencing 16S rRNA. Results The positive rates of nontuberculous mycobacteria in source water, treated water, and tap water were 60% , 25% , and 10. 3% , respectively. Mycobacterium gordonae and Mycobacterium fortuitum were identified, of which Mycobacterium gordonae was the most frequently identified species. Conclusion Nontuberculous mycobacteria are widely distributed in drinking water distribution systems in Shanghai. Thus, effective control measures should be taken to protect the health of the people.
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Received: 26 September 2008
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Corresponding Authors:
MEI Jian
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