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Volume 25, Number 9—September 2019
Research

Genetic Characterization and Enhanced Surveillance of Ceftriaxone-Resistant Neisseria gonorrhoeae Strain, Alberta, Canada, 2018

Byron M. BerengerComments to Author , Walter Demczuk, Jennifer Gratrix, Kanti Pabbaraju, Petra Smyczek, and Irene Martin
Author affiliations: University of Calgary, Calgary, Alberta, Canada (B. Berenger); Alberta Public Laboratories, Calgary (B. Berenger, K. Pabbaraju); Public Health Agency of Canada, Winnipeg, Manitoba, Canada (W. Demczuk, I. Martin); Alberta Health Services, Edmonton, Alberta (J. Gratrix, P. Smyczek)

Main Article

Figure

Core single-nucleotide variant (SNV) phylogenetic tree of ceftriaxone-resistant Neisseria gonorrhoeae identified from enhanced surveillance in Alberta, Canada (bold), and reference isolates. The maximum-likelihood phylogenetic tree is rooted on the reference genome of N. gonorrhoeae FA1090 (GenBank accession no. NC_002946.2). Scale bar represents the estimated evolutionary divergence between isolates on the basis of average genetic distance between strains (estimated number of substitutions in t

Figure. Core single-nucleotide variant (SNV) phylogenetic tree of ceftriaxone-resistant Neisseria gonorrhoeae identified from enhanced surveillance in Alberta, Canada (bold), and reference isolates. The maximum-likelihood phylogenetic tree is rooted on the reference genome of N. gonorrhoeae FA1090 (GenBank accession no. NC_002946.2). Scale bar represents the estimated evolutionary divergence between isolates on the basis of average genetic distance between strains (estimated number of substitutions in the sample/total number of high-quality SNVs). Strains F89 (WHO-Y), A8806 (WHO-Z), and H041 (WHO-X), A7536, 47707, A7846, FC460, and FC428 are previously reported ceftriaxone-resistant reference strains (4). MLST, multilocus sequence typing; NG-MAST, N. gonorrhoeae multiantigen sequence typing; NG-STAR, N. gonorrhoeae sequence typing for antimicrobial resistance.

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Page created: August 21, 2019
Page updated: August 21, 2019
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The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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