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Serological Analysis and Epidemiologic Characteristics of Group A Streptococci in Seoul(1998-2000)

Journal of the Korean Pediatric Society 2002;45(11):1368-1372.
Published online November 15, 2002.
Serological Analysis and Epidemiologic Characteristics of Group A Streptococci in Seoul(1998-2000)
Sun-Hee Choi1, Yun-Ho Kim1, Sung-Ho Cha1, Ki-Sang Kim2, Young-Hee Lee2
1Department of Pediatrics, College of Medicine, Kyunhee University, Seoul, Korea
2Department of Molecular Bacteriology, National Institute of Health, Seoul, Korea
3년간(1998-2000년) A군 연구균 감염의혈청학적 형분류와 역학적 특징
최선희1, 김연호1, 차성호1, 김기상2, 이영희2
1경희대학교 의과대학 소아과학교실
2국립보건원 분자세균과
Correspondence: 
Sung-Ho Cha, Email: tcha0319@netsgo.com
Abstract
Purpose
: Group A streptococci have a cell wall which consists of M protein and T protein. T protein is known to be helpful in the understanding of the epidemiology of group A streptococci. To study the epidemiologic characteristics, we serotyped T protein of group A streptococci obtained from patients admitted to hospitals, or who visited OPD in five districts of Seoul the during last three years.
Methods
: Group A streptococci were obtained in five districts in north, northeast, central, northwest and south Seoul from 1998 through 2000. All isolated group A streptococci were serotyped with T protein antisera(Institute of Sera and Vaccine, Prague, Czech Republic).
Results
: In 1998, analysis of obtained total number of 92 strains revealed that T12, T4, and NT acounted for 72.2%. Among seven cases of scarlet fever, T12 was isolated in four cases and T4 was found in three cases. Two cases of tonsilar abscess produced T8 and NT. One case of cervical lymphadenitis showed T12. In 1999, 41 cases were studied showing that T12, T4, and T1 contributed 68%. Among five cases of scarlet fever, T12 and T4 make up three case. There were two cases of pneumonia(T4 and T1) and one case of cervical lymphadenitis(T8/25). In 2000, the study was performed in four districts except the central area. Among 83 isolates, T12, T4 and T1 accounted for 63.9%. There were three cases of scarlet fever(T12, T4, T5), one case of tonsillar abscess(T12), one case of pneumonia(NT) and one case of sepsis(T1).
Conclusion
: Serological analysis of T protein of group A streptococci shows no endemic specificity. The yearly pattern reveals that T12 had been decreasing but T1 had shown the opposite trend.
Key Words: Group A streptococci, Serology, T protein


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