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Isolation of Causative Microorganism and Antimicrobial Susceptibility Test in Impetigo Developed in the Past Four Years

Journal of the Korean Pediatric Society 2000;43(5):632-637.
Published online May 15, 2000.
Isolation of Causative Microorganism and Antimicrobial Susceptibility Test in Impetigo Developed in the Past Four Years
Hyun Jeong Lee1, Sang Jung Lee1, Seog Jun Ha2, Chang Kyu Oh3, Jin Wou Kim1
1Departments of Dermatology, St. Paul`s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
2Medical Department activity, Second Division of Marine Corps, Kimpo, Korea
3Departments of Pediatrics, St. Paul`s Hospital, College of Medicine, The Catholic University of Korea
최근 4년간 발생한 농가진의 원인균 및 항생제 감수성에 대한 연구
이현정1, 이상정1, 하석준2, 오창규3, 김진우1
1가톨릭대학교 의과대학 성바오로병원 피부과
2국군해병 2사단 의무대
3가톨릭대학교 의과대학 성바오로병원 소아과
Correspondence: 
Jin Wou Kim, Email: jwkim@sph.cuk.ac.kr
Abstract
Purpose
: Recently, Staphylococcus aureus has been reported as the principal microorganism isolated from impetigo, showing variable degrees of antimicrobial resistance. The aim of this work was to study the causative organism of impetigo the their antimicrobial susceptibility developed in impetigo in the past four years.
Methods
: We performed bacterial cultures and antimicrobial susceptibility tests in 73 patients with impetigo who visited the Departments of Dermatology and Pediatrics at St. Paul's Hospital of the Catholic University of Korea in Seoul.
Results
: Of 73 patients, microorganisms were identified in 70 patients between May 1995 and August 1999. Staphylococcus aureus was isolated from 63(90%) patients. Antimicrobial susceptibility test for Staphylococcus aureus revealed low resistance to bactrim(0.0%), rifampicin(0.0%), van- comycin(3.2%), ceftriaxone(4.0%), imipenem(5.4%), ampicillin-clavulanic acid(6.1%), oxacillin(8.1%), cephazolin(9.1%), cephalothin(9.7%) and cefotaxime(10.8%). However, Staphylococcus aureus had high resistance to erythromycin(65.7%) and gentamicin(85.5%). Thirty-six(57.1%) strains of isolated Staphylococcus aureus showed resistance to more than one drug, including two strains(3.1%) resistant to more than 10 drugs.
Conclusion
: Staphylococcus aureus was the most common cause of impetigo developed in the pa- st four years. It was susceptible to most antimicrobial agents except erythromycin and gentamicin, and methicillin resistance was not strong in our results.
Key Words: Bacterial culture and sensitivity test, Impetigo, Staphylococcus aureus


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