Peng XM,Pei HS,Li XY,et al. Studies on Legionella-contamination to the air-conditioning cooling towers in big hotels and on its sero prevalence in the relatad populations in Beijing [J]．Chin Jf Epidemiol,2000,21(4)：289–291．(In Chinese)
Shi HQ,Huang JW,Wu XF,et al. Occurrence and Distribution of Legionella in Man-made Water Systems of Guangzhou[J].J Applied Environml Biol,2003,9(6)6：635–638．(In Chinese)
Zhang YM ,Chen ZM ,Lei J,et al. The Status of Legionella Contamination in Central Air Conditioning and Warm Water System and the Crowed Infection Level [J].J Ningxia Med University,2009,31(5)：595–597．(In Chinese)
[6]
Tenover FC, Arbeit RD, Goering RV, et al. Interpreting chromosomal DNA restriction patterns produced by pulse-field gel electrophoresis criteria for bacterial strain typing[J].J Clin Microbiol, 1995, 33(9) : 2233-2239.
[7]
Chen Y,Shen JM,He CZ, et al. Investigation on the status of clinical infection and environmental contamination by legion all in Shanghai [J].Shanghai Jf Prev Med,2000,12(7)：305–307．(In Chinese)
Talon D, Cailleaux V, Thouverez M, et al. Discriminatory power and usefulness of pulsed field gel electrophoresis in epidemiological studies of Pseudomonas aeruginosa[J]. J Hosp Infect, 1996,32(2):135-145.
