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Epidemiological study of hemolytic streptococci in pupils in seven prefectures in Japan


, : Epidemiological study of hemolytic streptococci in pupils in seven prefectures in Japan. Osaka City Medical Journal 31(1): 1-10

In 1983, during six weeks from late April to early June, We isolated hemolytic streptococci from the throats of 2,527 elementary and middle-school pupils in seven prefectures in Japan. Here we give the rate of detention group A, B, C, and G streptococci when the conditions for preparation of the culture medium, collection of the samples, culture methods, and identification were as similar as possible. Rates were higher than reported elsewhere. In all schools, group A was most common, B next, G uncommon; in some classes, group C was extremely infrequent or not detected at all. The detection rate of group A was different for every class of elementary and middle-school, and the difference between the highest and the lowest was by a factor of 2 to 3. For the T-types of group A, the most common were T-13 in Akita and Niigata. T-12 in Osaka, T-28 in Saitama, T-8 in Shimane, T-11 and T-12 in Saga, and T-28, T-1, and T-13 in Kochi. The detection rate of types of group B was 38.0% for Ia, 22.9% for Ic, and 19.4% for Ib. The detection of group A was higher in boys and that of group B was higher in girls. Detection of these streptococci in general was higher in rural areas.

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Accession: 005375568

PMID: 3912700

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Related references

Nakajima, K.; Okuyama, M.; Okuda, K., 1985: Epidemiological study on hemolytic streptococci isolated from throats of elementary and junior high school pupils at 7 prefectures in Japan. Part I. Regional comparison of detection rate of group-A, B, C and G hemolytic streptococci. Kansenshogaku Zasshi. Journal of the Japanese Association for Infectious Diseases 59(9): 892-904

Nakajima, K.; Okuyama, M.; Okuda, K., 1985: Epidemiological study on hemolytic streptococci isolated from throats of elementary and junior high school pupils at 7 prefectures in Japan. Part II. Regional comparison of detection rate of group-A hemolytic streptococci from the standpoint of type classification. Kansenshogaku Zasshi. Journal of the Japanese Association for Infectious Diseases 59(9): 905-913

Nakajima, K.; Okuyama, M.; Okuda, K., 1985: Epidemiological study on hemolytic streptococci isolated from throats of elementary and junior high school pupils at 7 prefectures in Japan. Part III. Regional comparison of detection rate of group-B hemolytic streptococci from the standpoint of type classification. Kansenshogaku Zasshi. Journal of the Japanese Association for Infectious Diseases 59(9): 914-920

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