ArticleThe Journal of veterinary medical science2025
Prevalence and genetic characteristics of antimicrobial-resistant Escherichia coli in wild birds in Japan.
Article in The Journal of veterinary medical science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Extended-spectrum β-lactamase-producing Escherichia coli with chromosomally integrated resistance genes isolated from a wild Asian black bear.The Journal of veterinary medical science · 2026Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Antimicrobial-resistant bacteria in wild animals are a multisectoral concern worldwide. In this study, we examined fecal samples collected from wild birds in two prefectures of Japan between 2021 and 2024 using both deoxycholate-hydrogen sulfide-lactose (DHL) agar media and antimicrobial-containing DHL agar media. Of the 252 fecal samples from 11 bird species, 159 E. coli were isolated from 70 samples (27.8%) of six species, and resistance was found in 4.4% of isolates from DHL media. Using nalidixic acid (NAL)- and cefotaxime (CTX)-containing media, NAL-resistant isolates were isolated from great cormorants and spot-billed ducks, and an extended-spectrum β-lactamase (ESBL)/AmpC β-lactamase producer was isolated from great cormorants. Next-generation sequencing analysis of 19 E. coli isolates exhibiting resistance to NAL and/or CTX indicated diverse genotypes. Genetic analysis indicated that amino acid substitution of quinolone-resistance-determining-regions and qnrS were responsible for NAL resistance, and CTX-Ms (bla
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