Extended-spectrum β-lactamase-encoding genes are spreading on a wide range of Escherichia coli plasmids existing prior to the use of third-generation cephalosporins.
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Microb Genom. 2018 Sep;4(9):e000203. doi: 10.1099/mgen.0.000203. Epub 2018 Aug 6.
Microb Genom. 2018.
PMID: 30080134
Free PMC article.