Emerging Infectious Disease ISSN: 1080-6059

Extended-Spectrum β-Lactamase Genes of Escherichia coli in Chicken Meat and Humans, the Netherlands

Ilse Overdevest, Ina Willemsen, Martine Rijnsburger, Andrew Eustace, Li Xu, Peter Hawkey, Max Heck, Paul Savelkoul, Christina Vandenbroucke-Grauls, Kim van der Zwaluw, Xander Huijsdens, and Jan Kluytmans

Author affiliations: Author affiliations: St. Elisabeth Hospital, Tilburg, the Netherlands (I. Overdevest, J. Kluytmans); Amphia Hospital, Breda, the Netherlands (I. Overdevest, I. Willemsen, J. Kluytmans); University Medical Centre, Amsterdam, the Netherlands (M. Rijnsburger, P. Savelkoul, C. Vandenbroucke-Grauls, J. Kluytmans); Heart of England National Health Service Foundation Trust, Birmingham, UK (A. Eustace, L. Xu, P. Hawkey); University of Birmingham, Birmingham (P. Hawkey); National Institute of Public Health and Environmental Protection, Bilthoven, the Netherlands (M. Heck, K. van der Zwaluw, X. Hiujsdens)

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Figure 2

Multilocus sequence typing patterns of Escherichia coli from chicken meat, other meat types, human rectal swabs, and human blood cultures, the Netherlands. A) All E. coli containing extended-spectrum β-lactamase genes; B) E. coli containing blaTEM-52; C) E. coli containing blaCTX-M-1; D) E. coli containing blaCTX-M-15. Major sequence types are shown as numbers. Black connecting lines indicate single-locus variants; gray connecting lines indicate double-locus variants; dashed connecting lines ind

Figure 2. Multilocus sequence typing patterns of Escherichia coli from chicken meat, other meat types, human rectal swabs, and human blood cultures, the Netherlands. A) All E. coli containing extended-spectrum β-lactamase genes; B) E. coli containing bla_TEM-52; C) E. coli containing bla_CTX-M-1; D) E. coli containing bla_CTX-M-15. Major sequence types are shown as numbers. Black connecting lines indicate single-locus variants; gray connecting lines indicate double-locus variants; dashed connecting lines indicate strains with >3 loci that are different; and shadowing indicates that >2 sequence types belong to 1 complex.

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