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Volume 14, Number 2—February 2008

Research

Dissemination of Clonally Related Escherichia coli Strains Expressing Extended-Spectrum β-Lactamase CTX-M-15

Teresa M. Coque*†‡Comments to Author , Ângela Novais*†‡, Alessandra Carattoli§, Laurent Poirel¶, Johann Pitout#**, Luísa Peixe††, Fernando Baquero*†‡, Rafael Cantón*†‡, and Patrice Nordmann¶
Author affiliations: *Hospital Universitario Ramón y Cajal, Madrid, Spain; †Unidad de Resistencia a Antibióticos y Virulencia Bacteriana Asociada al Consejo Superior de Investigaciones Científicas, Madrid, Spain; ‡El Consorcio de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain; §Istituto Superiore di Sanità, Rome, Italy; ¶Hospital Bicetre, Paris, France; #Calgary Laboratory Services, Calgary, Alberta, Canada; **University of Calgary, Calgary, Alberta, Canada; ††Universidade do Porto, Porto, Portugal;

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Figure

Computer analysis of a subset of representative HpaI restriction profiles of IncF CTX-M-15 plasmids from Escherichia coli isolates in the Appendix Table. Cluster analysis was done by using Fingerprinting II in Informatix software version 3.0 (Bio-Rad Laboratories, Hercules, CA, USA) and applying the unweighted pair group method with arithmetic averages (optimization 0.5%, tolerance 1.00%). Ph, phylogenetic; ST, sequence type; RFLP, restriction fragment length polymorphism; Can, Canada; Fra, France; Por, Portugal; Swi, Switzerland; Ind, India; Kuw, Kuwait; Sp, Spain.

Figure. Computer analysis of a subset of representative HpaI restriction profiles of IncF CTX-M-15 plasmids from Escherichia coli isolates in the Appendix Table. Cluster analysis was done by using Fingerprinting II in Informatix software version 3.0 (Bio-Rad Laboratories, Hercules, CA, USA) and applying the unweighted pair group method with arithmetic averages (optimization 0.5%, tolerance 1.00%). Ph, phylogenetic; ST, sequence type; RFLP, restriction fragment length polymorphism; Can, Canada; Fra, France; Por, Portugal; Swi, Switzerland; Ind, India; Kuw, Kuwait; Sp, Spain.

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