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Volume 22, Number 4—April 2016

Research

Limited Dissemination of Extended-Spectrum β-Lactamase– and Plasmid-Encoded AmpC–Producing Escherichia coli from Food and Farm Animals, Sweden

Stefan Börjesson1Comments to Author , Sofia Ny1, Maria Egervärn, Jakob Bergström, Åsa Rosengren, Stina Englund, Sonja Löfmark, and Sara Byfors
Author affiliations: Author affiliations: National Veterinary Institute, Uppsala, Sweden (S. Börjesson, S. Englund); Public Health Agency of Sweden,; Stockholm, Sweden (S. Ny, J. Bergström, S. Löfmark, S. Byfors); National Food Agency, Uppsala (M. Egervärn, Å. Rosengren)

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Figure 2

Frequency of overlapping plasmid replicon types containing extended-spectrum β-lactamase– and plasmid-encoded AmpC genes in Escherichia coli isolates from various sources, Sweden. Data for leafy greens were excluded because there were only 2 isolates (incI1 and incI2). Other replicon types also include nontypeable plasmids. Gray bar indicates plasmids that could not be transferred by electroporation, primarily isolates with blaCTX-M-15 and blaCTX-M-2.

Figure 2. Frequency of overlapping plasmid replicon types containing extended-spectrum β-lactamase– and plasmid-encoded AmpC genes in Escherichia coli isolates from various sources, Sweden. Data for leafy greens were excluded because there were only 2 isolates (incI1 and incI2). Other replicon types also include nontypeable plasmids. Gray bar indicates plasmids that could not be transferred by electroporation, primarily isolates with blaCTX-M-15 and blaCTX-M-2.

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1These authors contributed equally to this article.

Page created: March 15, 2016
Page updated: March 15, 2016
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