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Antimicrobial Susceptibility of Coagulase-Negative Staphylococci Isolated from Bovine Mastitis Between 2003 and 2008 in Korea

  • Nam, H.M. (National Veterinary Research and Quarantine Service) ;
  • Lim, S.K. (National Veterinary Research and Quarantine Service) ;
  • Kim, J.M. (National Veterinary Research and Quarantine Service) ;
  • Kang, H.M. (National Veterinary Research and Quarantine Service) ;
  • Moon, J.S. (National Veterinary Research and Quarantine Service) ;
  • Jang, G.C. (National Veterinary Research and Quarantine Service) ;
  • Kim, J.M. (National Veterinary Research and Quarantine Service) ;
  • Wee, S.H. (National Veterinary Research and Quarantine Service) ;
  • Joo, Y.S. (National Veterinary Research and Quarantine Service) ;
  • Jung, S.C. (National Veterinary Research and Quarantine Service)
  • Received : 2010.05.24
  • Accepted : 2010.07.02
  • Published : 2010.10.28

Abstract

A total of 1,444 coagulase-negative staphylococci (CNS) isolates from bovine mastitic milk samples collected during 2003-2008 in Korea were identified to the species level. Of 14 species identified, S. simulans, S. haemolyticus, and S. sciuri accounted for over 60% of the isolates. All the CNS isolates were tested for susceptibility to eight antimicrobials commonly used in dairy cattle. With a few exceptions, similar resistance patterns were observed among the CNS species: penicillin and ampicillin showed the lowest activity, whereas amikacin, cephalothin, and gentamicin were highly effective. About 39% (557/1,444) of the CNS isolates were pan-susceptible, whereas 12% (175/1,444) showed resistance to four or more antimicrobials tested.

Keywords

References

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