Annals of Clinical Microbiology, The official Journal of the Korean Society of Clinical Microbiology

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pISSN 2288-0585 eISSN 2288-6850

Distribution of Beta-Hemolytic Streptococci of Throat Culture of Elementary School Children in Jinju Area, 2004

Original article

Annals of Clinical Microbiology (Ann Clin Microbiol) 2005 June Volume 8, Issue 1, pages 51-56.


https://doi.org/10.5145/ACM.2005.08.1.51

Distribution of Beta-Hemolytic Streptococci of Throat Culture of Elementary School Children in Jinju Area, 2004

Eun-Ha Koh, and Sunjoo Kim*

Department of Laboratory Medicine, School of Medicine, and Institute of Health Sciences, Gyeongsang National University, Jinju, Korea

Abstract

Background: The carrier study of group A streptococci (GAS), the most common cause of bacterial pharyngitis, is important to understand the epidemiology of GAS in the region. The authors performed throat cultures from the children of four elementary schools in Jinju area to investigate current microbiological characteristics in this area.

Methods: Throat cultures were taken from 2,351 healthy elementary school children (male 1,311 and female 1,040) from October through December, 2004. Two schools are located in rural areas, while the other two schools are in Jinju city. Beta-hemolytic streptococci (BHS) were identified with bacitracin disk (0.04 U) and latex agglutination test (Seroiden Strepto Kit, Eiken).

Results: Four-hundred forty-three (18.8%) yielded BHS from 2,351 school children. Serogrouping revealed 84.9% of group A, 5.9% of group C, 4.7% of group B, 3.6% of group G, and 0.9% of nongroup A, B, C, G in a decreasing order. Isolation rate of GAS was similar between girls and boys. Children of elementary schools in rural areas showed significantly higher isolation rates (18.621.7%) compared to those (12.5-12.7%) in urban areas.

Conclusion: The isolation rate of BHS was 18.8% in Jinju area, 2004. Group A was 84.9% and group C was next common. Although the isolation rate of GAS was similar by age or sex, it showed a significant difference by the location of the schools. (Korean J Clin Microbiol 2005;8(1):51-56)

Keywords

Beta-hemolytic streptococci, Group A streptococci, Throat culture, Carrier, Children, Pharyngitis