CTX-M-65 Extended-Spectrum β-Lactamase–Producing Salmonella enterica Serotype Infantis, United States1
Allison C. Brown
, Jessica C. Chen, Louise K. Francois Watkins, Davina Campbell, Jason P. Folster, Heather Tate, Jamie Wasilenko, Christine Van Tubbergen, and Cindy R. Friedman
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.C. Brown, J.C. Chen, L.K. Francois Watkins, D. Campbell, J.P. Folster, C. Van Tubbergen, C.R. Friedman); Food and Drug Administration, Laurel, Maryland, USA (H. Tate); US Department of Agriculture, Athens, Georgia, USA (J. Wasilenko)
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Figure 2
Figure 2. High-quality single-nucleotide polymorphism–based phylogenetic tree of clinical and retail meat isolates of Salmonella enterica serotype Infantis with pulsed-field gel electrophoresis pattern JFXX01.0787 collected in the United States and submitted to the National Antimicrobial Resistance Monitoring System for whole-genome sequencing. Tree tips are labeled with National Center for Biotechnology Information accession numbers (sequence read archive run identification numbers); shading indicates patients’ international travel history for clinical isolates (black, recent international travel; gray, no recent international travel; white, travel data missing). Black circles indicate isolates that are missing the blaCTX-M-65 gene. Isolates in top clade differed by 2–47 high-quality single-nucleotide polymorphisms. Numbers displayed on nodes are bootstrap support values, an indication of the reliability of the tree. Only bootstrap values >80 are displayed. More information on patient and isolate characteristics are provided in Tables 1 and 2. Scale bar indicates nucleotide substitutions per site.
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Page created: November 20, 2018
Page updated: November 20, 2018
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