Predominance of bla CTX-M-65 and bla CTX-M-55 in extended-spectrum β-lactamase-producing Escherichia coli from raw retail chicken in South Korea
Extended-spectrum β-lactamase-producing Escherichia coli (ESBL-EC) are a serious public health concern worldwide. The aim of this study was to characterise ESBL-EC isolated from raw retail chicken in South Korea. The antimicrobial resistance, phylogenetic group and virulence gene prevalence of 67 ES...
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Published in | Journal of global antimicrobial resistance. Vol. 17; p. 216 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Netherlands
01.06.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Extended-spectrum β-lactamase-producing Escherichia coli (ESBL-EC) are a serious public health concern worldwide. The aim of this study was to characterise ESBL-EC isolated from raw retail chicken in South Korea.
The antimicrobial resistance, phylogenetic group and virulence gene prevalence of 67 ESBL-EC isolated from retail chicken in South Korea were investigated.
All of the isolates possessed bla
genes, predominantly bla
(52.2%) and bla
(25.4%), and three isolates harboured both bla
and bla
. More than one-half of the ESBL-EC strains also carried bla
. Antimicrobial susceptibility testing revealed that 98.5% of the strains were multidrug-resistant (MDR). Phylogenetic analysis showed that group A was predominant (56.7%), followed by B1 (19.4%), E (8.9%), B2 (6.0%) and D (6.0%). Virulence genes associated with extraintestinal pathogenic E. coli (ExPEC) were frequently detected in isolates of phylogenetic groups B1, B2, D and E.
The results in this study demonstrate that retail chicken in South Korea is highly contaminated with MDR ESBL-EC and may serve as a reservoir for transmitting ExPEC to humans. |
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ISSN: | 2213-7173 |
DOI: | 10.1016/j.jgar.2019.01.005 |