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CTX-M-15-type extended-spectrum beta-lactamases-producing Escherichia coli from wild birds in Germany

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E-mail guenther.sebastian@vetmed.fu-berlin.de; Tel. (+49) 30 2093 6028; Fax (+49) 30 2093 6067.

Summary

The isolation of Escherichia coli from wild birds in Germany revealed the occurrence of four CTX-M-15-producing strains from four different birds (2.3% of 172 isolates). CTX-M producers were recovered from two Eurasian Blackbirds, one Rock Pigeon and a Greater White-fronted Goose. All CTX-M-producing E. coli revealed a clonal relationship as determined by pulsed-field gel electrophoresis (PFGE) and were assigned to multilocus sequence type (ST) 648. Our findings suggest the emergence of a new clone with epidemiological importance and strengthen the role of wild bird species other than waterfowl as possible reservoirs of ESBL-producing Enterobacteriaceae.

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