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군견에서 분리한 Enterococcus faecalis, E. faecium의 항생제 내성 연구
박경완 ( Kyoungwan Park ),주영훈 ( Younghoon Joo ),조성범 ( Sungbum Cho ),방기만 ( Kiman Bang ),고명식 ( Myeongsik Ko ),유건주 ( Gunju Yoo ) 국군의무사령부 2017 대한군진의학학술지 Vol.48 No.1
Objective: Investigate antimicrobial resistance of enterococci isolated from various group of military working dogs(MWDs) to understand their characteristics and the differences between isolates from different groups. Methods: Fecal samples of military working dogs were collected from military working dog training center located in Chuncheon, Korea. Samples were collected by using sterile material and transported to laboratory within 12hrs. Species was confirmed by polymerase chain reaction. Antimicrobial susceptibility test was performed on E. faecalis, E. faecium, and other unidentified Enterococcus spp. isolates using disk diffusion method against 12 antibiotics. Results: First, in cohort study, we collected 193 feces samples from three group of puppy dogs and 200 Enterococcus spp. (149; 74.50% E. faecalis, 45; 22.50% E. faecium, 6; 3.00% other Enterococcus spp.) were isolated from this samples. All 200 isolates were susceptible to ampicillin, amoxicillin-clavulanic acid, chloramphenicol, imipenem. Antimicrobial resistance against aminoglycosides and ciprofloxacin of the isolates was increased with growth of the puppy dogs. In cross sectional study, total 137 samples including 127 feces and 10 soil samples were collected. 44 E. faecalis, 50 E. faecium, and 19 species unidentified Enterococcus were isolated from those samples. In case of refresher training dogs, the isolation rate of E. faecalis was high shortly after entering training center, but the isolation rate of E. faecium tended to increase immediately before leaving. Most antimicrobial resistance rates were higher in enterococci isolated from MWDs served MWDs training center than in enterococci isolated from refresher training MWDs served other field troops. Conclusion: Continuous monitoring of antimicrobial resistance is needed to consider the possibility of exposure to antibiotic-resistant bacteria in soldiers who live with dogs and select appropriate antibiotics for MWDs.