There are many researches about the contribution of virginiamycin use in animals to quinupristin/dalfopristin (Q/D) resistance in humans. In this study, the prevalence and mechanisms of streptogramin resistance in Enterococcus faecium from chickens were investigated. A total of 170 E. faecium isolates from 38 chicken farms was tested for antimicrobial susceptibility. Eleven (6.5%) E. faecium isolates were found to be resistant to Q/D. The vatE and ermB genes were detected in 2 (18%) and 6 (55%) of Q/D-resistant E. faecium respectively. By using pulsed-field gel electrophoresis (PFGE), 6 distinct PFGE patterns were identified. These data indicate that Q/D resistance among E. faecium from chickens remains low despite the long history of virginiamycin use. However, we have to concern over antimicrobial resistance in bacteria originated from animals, including the possibility of transfer of resistance genes from animal to human.

ABSTRACT
 서 론
 재료 및 방법
  1. 시료채취 및 균분리
  2. 항생제 감수성 검사
  3. 내성 유전자 검색 및 유전자 분석
 결 과
  1. 균분리 및 항생제 내성율
  2. Quinupristin/dalfopristin 내성균 특성 조사
 고 찰
 참고문헌

• 김애란(국립수의과학검역원) | Aeran Kim (National Veterinary Research and Quarantine Service)
• 조영미(국립수의과학검역원) | Young Mi Cho (National Veterinary Research and Quarantine Service)
• 허문(국립수의과학검역원) | Moon Her (National Veterinary Research and Quarantine Service)
• 정병열(국립수의과학검역원) | Byeong Yeal Jung (National Veterinary Research and Quarantine Service)
• 임숙경(국립수의과학검역원) | Suk Kyung Lim (National Veterinary Research and Quarantine Service)
• 정석찬(국립수의과학검역원) | Suk Chan Jung (National Veterinary Research and Quarantine Service)
• 송창선(건국대학교 수의과대학) | Chang Seon Song (College of Veterinary Medicine, Konkuk University)
• 이지연(국립수의과학검역원) | Ji Youn Lee (National Veterinary Research and Quarantine Service) Correspondence