Bacteriological and Virological Studies on the Cause of Sporadic Acute Gastroenteritis in Tama, Tokyo (1991-1996)

  • YOSHIDA Isao
    Tama Branch Laboratory, Tokyo Metropolitan Research Laboratory of Public Health
  • HAYASHI Yukinao
    Tama Branch Laboratory, Tokyo Metropolitan Research Laboratory of Public Health
  • KATAYAMA Kanako
    Tama Branch Laboratory, Tokyo Metropolitan Research Laboratory of Public Health
  • YAMADA Sumio
    Tama Branch Laboratory, Tokyo Metropolitan Research Laboratory of Public Health

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Other Title
  • 東京都多摩地区における散発下痢症の細菌学的・ウイルス学的検索成績 (1991-1996)
  • トウキョウト タマ チク ニ オケル サンパツ ゲリショウ ノ サイキンガクテ

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Abstract

Between May 1991 and December 1996, bacteriological and virological investigations on the fecal samples from patient of infantile diarrhea (155 cases), or infectious gastroenteritis (1, 409 cases) diagnosed with 9 medical institutions in Tama of Tokyo were carried out. Of 1, 564 samples, 722 (46.2%) were enteropathogen positive cases, and mixed infection was also observed in about 15% of the positive cases. Among 13 different kinds of enteropathogens identified, the most prevalent one was pathogenic E.coli (20.7%), followed by Campylobacter spp. (10.0%), Rotavirus (8.8%), Salmonella spp. (3.9%), Adenovirus (1.9%), ECHO virus (0.9%), Vibrio parahaemolyticus (0.8%), Poliovirus (0.7%), Aeromonas spp. and Coxsackie B virus (both 0.6%). Furthermore, SRSV was confirmed in 82 out of 619 patients (13.2%) for 2 years (1995 and 1996).In addition, Shigella sonnei (3 cases), S. Paratyphi-A (1 case) and enterohemorrhagic E. coli 0157: H7 (2 cases) were also detected. A higher detection ratio was recorded in February, August and November, reflecting respectively by month a highly frequency of Rotavirus, enteric bacteria causing food poisoning and SRSV. With reference to the isolates, the most of pathogenic E. colibelonged to enteropathogenic serotype E. coli (EPEC), and S. Enteritidis was most prevalent serotype.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 72 (6), 599-608, 1998

    The Japanese Association for Infectious Diseases

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