Antimicrobial resistance patterns of Listeria species and Staphylococcus aureus isolated from poultry carcasses in Korea

계육에서 분리한 Listeria species 와 Staphylococcus aureus의 항생제 내성패턴

  • Hur, Jin (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Jun Man (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Kwon, Nam Hoon (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Park, Kun Taek (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Lim, Ji Youn (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Jung, Woo Kyoung (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Hong, Soon Keun (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University) ;
  • Park, Yong Ho (Department of Microbiology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University)
  • Accepted : 2004.05.18
  • Published : 2004.06.30

Abstract

This study was carried out to investigate the antibiotic resistance pattern of Listeria spp. and Staphylococcus aureus. A total of 17 (14.8%) L. monocytogenes, 13 (11.3%) L. innocua, 7 (7%) L. welshimeri, and 83 (72.2%) S. aureus were isolated from commercial poultry carcasses in Seoul and Kyonggi province during the period between 2001 and 2003. Antibiotic susceptibility test of all Listeria strains isolated was performed by the disk agar diffusion method. Antibiotics used in the study were as follows; Amikacin (An), Ampicillin (Am), Cephalothin (Cf), Chloramphenicol (C), Ciprofloxacin (Cip), Erythromycin (E), Gentamicin (Gm), Imipenem (Ipm), Kanamycin (K), Minocycline (Mi), Neomycin (N), Norfloxacin (Nor), Ofloxacin (Ofx), Penicillin (P), Streptomycin (S), Tetracycline (Te), Tobramycin (Nn), Trimethoprim (Tmp), Trimethoprim/Sulfamethoxazloe (Sxt), and Vancomycin (Va). The antibiotic resistance pattern of S. aureus isolates was performed by the disk agar diffusion method. For the latter program, antibiotics used to the study were as follows; Cf, C, Cip, Clindamycin (Cc), E, Gm, Ipm, Nafcillin (Nf), Oxacillin (Ox), P, Te, Sxt, and Va. Of the 17 L. monocytogenes isolates, 94.1% were resistant to Te, 88.2% to Mi, 11.8% to Nor, 11.8% to S, 5.9% to Cip, and 5.9% to C. Of 13 L. innocua, 53.8% were resistant to Te, 23.1% to Mi, 23.1% to S, 7.7% to Cip, and 7.7% to Nor. Of 7 L. welshimeri, 57.1% were resistant to Te, and 14.3% to Am. Of 83 S. aureus, 100% were resistant to Te, 86.7% to Gm, 34.9% to P, 15.7% to Cip, 12% to Cc, 9.6% to E. The multiple antibiotic resistance patterns of L. monocytogenes isolates were observed in Te Mi Cip (5.9%), Te Mi Nor (5.9%), Te Mi (76.5%), and Te Nor (5.9%). Multiple antibiotic resistance was also found in L. innocua isolates. Resistant to Te Mi S Cip Nor was 7.7%, Te Mi S (7.7%), Te Mi (7.7%), and was 7.7% to Te S. Antibiotic resistance patterns for S. aureus isolats were demonstrated to Te Gm P Cip Cc E (6.0%), Te Gm Cip Cc E (3.6%), Te Gm P Cc (1.2%), Te Gm P (15.6%), Te Gm Cip (2.4%), Te P Cip (2.4%), Te Gm Cc (1.2%), Te Gm (56.6%), Te P (9.6%), and to Te Cip (1.2%). The results of this study suggest a high incidence of Lsteria spp. and S. aureus on poultry carcasses. The contaminated poultry carcasses may be a potential vehicle for foodborne infections due to multiple antimicrobial resistant organisms.

Keywords

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