Combined Use of Bacteriophage Typing and Pulsed-Field Gel Electrophoresis in the Epidemiological Analysis of Japanese Isolates of Enterohemorrhagic Escherichia coli O157:H7

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  • Izumiya Hidemasa
    Department of Bacteriology, National Institute of Infectious Diseases
  • Masuda Takashi
    Shizuoka Prefectural Public Health Institute
  • Ahmed Rafiq
    Bureau of Microbiology, Laboratory Center for Disease Control, Health Canada
  • Khakhria Rasik
    Bureau of Microbiology, Laboratory Center for Disease Control, Health Canada
  • Wada Akihito
    Department of Bacteriology, National Institute of Infectious Diseases
  • Terajima Jun
    Department of Bacteriology, National Institute of Infectious Diseases
  • Itoh Ken-ichiro
    Department of Bacteriology, National Institute of Infectious Diseases
  • Johnson Wendy M.
    Bureau of Microbiology, Laboratory Center for Disease Control, Health Canada
  • Konuma Hirotaka
    Division of Microbiology, National Institute of Health Sciences
  • Shinagawa Kunihiro
    Department of Veterinary, Faculty of Agriculture, Iwate University
  • Tamura Kazumichi
    Department of Bacteriology, National Institute of Infectious Diseases
  • Watanabe Haruo
    Department of Bacteriology, National Institute of Infectious Diseases

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タイトル別名
  • Combined Use of Bacteriophage Typing and Pulsed-Field Gel Electrophoresis in the Epidemiological Analysis of Japanese Isolates of Enterohemorrhagic <i>Escherichia coli</i> O157:H7
  • Combined Use of Bacteriophage Typing an
  • Combined Use of Bacteriophage Typing and Pulsed‐Field Gel Electrophoresis in the Epidemiological Analysis of Japanese Isolates of Enterohemorrhagic <i>Escherichia coli</i> O157:H7

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抄録

A total of 236 enterohemorrhagic Escherichia coli (EHEC) O157:H7 isolates in Japan were investigated by bacteriophage typing, and the results were compared with those of pulsed-field gel electrophoresis (PFGE). Seven phage types (PTs) were observed in 71 isolates which were derived from 22 outbreaks. All of the isolates from ten outbreaks in the Kinki region (midwestern part of Japan) in July-August 1996 were grouped into the same PFGE type (IIa) and PT 32, while among total isolates, there were such varieties as PFGE type IIa containing five phage types and PT32 containing two PFGE types. These results suggest that the ten outbreaks should be considered to be a single outbreak, and show that the combined use of bacteriophage typing and PFGE enhances reliability in epidemiological surveys.

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