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High Prevalence of blaCTXM–1/IncI1-Iγ/ST3 Plasmids in Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolates Collected From Domestic Animals in Guadeloupe (French West Indies)

Abstract : Extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) have been classified in the group of resistant bacteria of highest priority. We determined the prevalence of ESBL-E collected in feces from household and shelter pets in Guadeloupe (French West Indies). A single rectal swab was taken from 125 dogs and 60 cats between June and September 2019. The prevalence of fecal carriage of ESBL-E was 7.6% (14/185, 95% CI: 4.2-12.4), within the range observed worldwide. The only risk factor associated with a higher prevalence of ESBL-E rectal carriage was a stay in a shelter, suggesting that refuges could be hotspots for their acquisition. All but one ( Klebsiella pneumoniae from a cat) were Escherichia coli . We noted the presence of a bla CTX–M –1 /IncI1-Iγ/sequence type (ST3) plasmid in 11 ESBL-producing E. coli isolates belonging to ST328 ( n = 6), ST155 ( n = 4) and ST953 ( n = 1). A bla CTX–M –15 gene was identified in the three remaining ESBL-E isolates. The bla CTX–M –1 and most of the antimicrobial resistance genes were present in a well-conserved large conjugative IncI1-Iγ/ST3 plasmid characterized by two accessory regions containing antibiotic resistance genes. The plasmid has been detected worldwide in E. coli isolates from humans and several animal species, such as food-producing animals, wild birds and pets, and from the environment. This study shows the potential role of pets as a reservoir of antimicrobial-resistant bacteria or genes for humans and underlines the importance of basic hygiene measures by owners of companion animals.
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Submitted on : Wednesday, June 15, 2022 - 11:35:57 AM
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Gaëlle Gruel, David Couvin, Stéphanie Guyomard-Rabenirina, Guillaume Arlet, Jean-Christophe Bambou, et al.. High Prevalence of blaCTXM–1/IncI1-Iγ/ST3 Plasmids in Extended-Spectrum β-Lactamase-Producing Escherichia coli Isolates Collected From Domestic Animals in Guadeloupe (French West Indies). Frontiers in Microbiology, Frontiers Media, 2022, 13, pp.882422. ⟨10.3389/fmicb.2022.882422⟩. ⟨hal-03695556⟩

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