Characterization of antimicrobial resistance of Escherichia coli recovered from foods of animal and fish origin in Korea

Journal of Food Protection
Hyon-Ji Koo, Gun-Jo Woo

Abstract

Antimicrobial-resistant Escherichia coli is transferred from food-producing animals to humans through the food chain. We investigated the prevalence of antimicrobial resistance and resistance determinants and characterized the integrons of foodborne E. coli in Korea. In total, 162 E. coli isolates from commercial foods (raw meat, fish, and processed foods) were collected by the National Antimicrobial Resistance Management Program from 2004 to 2006. Susceptibility to 20 antibiotics was tested by disk diffusion, and resistance determinants were detected using PCR and genomic sequence analysis. The isolates were highly resistant to antibiotics commonly used in livestock farming. Resistance to tetracycline (74.7%) was the most frequently observed, followed by streptomycin (71%) and ampicillin (51.2%). Class 1 integrons were detected in 13 isolates (8%), and nine of these integrons were located on conjugative plasmids. None of the isolates produced extended-spectrum β -lactamase. One isolate (0.6%) harbored bla(CMY-2), which was located on a conjugative plasmid. Although the qnr gene was not detected, aac(6'9)-Ib-cr was present in two isolates (1.2%). This is the first report of aac(6'9)-Ib-cr in food isolates. Three or four amino a...Continue Reading

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Citations

May 9, 2014·Journal of Pathogens·Rafael Dos Santos RochaRegine Helena Silva Dos Fernandes Vieira
Mar 3, 2017·The Journal of Veterinary Medical Science·Jih-Ching YehHung-Chih Kuo
Jun 22, 2018·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Kwang Won Seo, Young Ju Lee
May 9, 2014·European Heart Journal·Gregory Y H Lip, Giancarlo Agnelli
Sep 10, 2014·Journal of Food Protection·Kanjana ChangkaewYasuhiko Suzuki
Sep 23, 2020·Journal of Microbiology and Biotechnology·Seokhwan KimSangryeol Ryu
Apr 21, 2021·Klinicheskaia laboratornaia diagnostika·M V Kuznetsova, J S Gizatullina

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