This study was performed to evaluate antimicrobial resistance of food-borne pathogens isolated from retail meat in Korea. A total of 157 samples of beef, pork, and chicken were collected and analyzed for E. coli, Salmonella, Campylobacter. Resistances to tetracycline were declined in accord with reduced usage of tetracycline in live stock production. E. coli stains from chicken meat had higher multi-drug resistance ratio than strains from other meat. One extended spectrum beta lactamase (ESBL) producing E. coli and two ESBL producing Salmonella were identified in this study. ESBL producing Salmonella strains were confirmed to carry CTX-M-1 type genes.

ABSTRACT
 Materials and Methods
  Sampling and isolation
  Antimicrobial susceptibility testing
  Identification of antimicrobial resistance gene
  Pulsed Field Gel Electrophoresis (PFGE) and rep-PCR
 Results
  Isolations from retail meat
  Antimicrobial resistance profiles
  Identification of antimicrobial resistance gene
  PFGE and rep-PCR analysis of Salmonella spp.
 Discussion
 Conclusion
 References

• Kim Yong Hoon(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety) Correspondence to
• Joo In Sun(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Kim Yoon Jeong(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Oh Mi Hyun(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Cho Joon Il(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Han Min Kyong(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Kim Soon Han(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)
• Moon Tae Wha(Food Science and Biotechnology Department, Center for Food and Bioconvergence, Seoul National University)
• Park Kun Sang(National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety)