Long-Term Prevalence of Group A Type T-1 Isolated from Thorat of Healthy Schoolchildren

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  • NAKAJIMA Kunio
    Streptococcal Disease Study Group Sakai Municipal Shukuin Health Center Department of Laboratory Medicine, Osaka City University, Medical School
  • OKUYAMA Michiko
    Department of Laboratory Medicine, Osaka City University, Medical School Osaka Municipal Momoyama Citizen Hospital
  • OKUDA Kiyoshi
    Department of Laboratory Medicine, Osaka City University, Medical School

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Other Title
  • A群溶血レンサ球菌T-1型菌の長期間にわたる流行について-健康学童を対象にして
  • A群溶血レンサ球菌T-1型菌の長期間にわたる流行について--健康学童を対象にして-1-
  • Aグン ヨウケツレンサキュウキン T-1ガタキン ノ チョウキカン ニ ワタル
  • Part I. Analysis by Detection Rate
  • 第1編流行の状況

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Abstract

The throat carrier rates of group A streptococci of school children in Osaka were followed up every two months from September, 1980 to November, 1987. All strains isolated were serologically grouped into A, B, C & G and then typed. The overall detection rates of group A, B, C & G streptococci were 42.2% throughout the present study period.<BR>In the early period of this study, the predominant type was varied every year; i.e. T-12 the first, T-6 and T-B3264 the following. But the epidemic trend was all changed since July, 1983. Group A type T-1 was most dominated successively for over 3 years from July, 1983 to January, 1987. The high carry rate (70-90%) of type T-1 was maintained especially for 13 months since November 1983. The rate of detection for the type T-1 was significantly increased among every school class in November in 1983. The freshmen who entered in April in 1984 were found to have a 85.7% detection rate for type T-1 during only. one month of their school life.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 62 (10), 886-892, 1988

    The Japanese Association for Infectious Diseases

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