Cluster of Escherichia coli Isolates Producing a Plasmid-Mediated OXA-48 β-Lactamase in a Spanish Hospital in 2012

ABSTRACT Three unrelated sequence type 131 (ST131), ST58, and ST83 Escherichia coli isolates with low-level resistance to imipenem and resistance to ertapenem were recovered in a Spanish hospital from July to October 2012. They were positive for bla OXA-48 carried by an IncL/M conjugative plasmid, which may have been acquired from Klebsiella pneumoniae.

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