Phylogenetic Analysis of Francisella tularensis Group A.II Isolates from 5 Patients with Tularemia, Arizona, USA, 2015–2017
Dawn N. Birdsell
1, Hayley Yaglom
1, Edwin Rodriguez, David M. Engelthaler, Matthew Maurer, Marlene Gaither, Jacob Vinocur, Joli Weiss, Joel Terriquez, Kenneth Komatsu, Mary Ellen Ormsby, Marette Gebhardt, Catherine Solomon, Linus Nienstadt, Charles H.D. Williamson, Jason W. Sahl, Paul S. Keim, and David M. Wagner
Author affiliations: Northern Arizona University, Flagstaff, Arizona, USA (D.N. Birdsell, C.H.D. Williamson, J.W. Sahl, P.S. Keim, D.M. Wagner); Arizona Department of Health Services, Phoenix, Arizona, USA (H. Yaglom, J. Weiss, K. Komatsu); Navajo County Public Health Services District, Show Low, Arizona, USA (E. Rodriguez, C. Solomon); Translational Genomics Research Institute, Flagstaff (D.M. Engelthaler); Coconino County Public Health Services District, Flagstaff (M. Maurer, M. Gaither, M.E. Ormsby, M. Gebhardt); Northern Arizona Healthcare, Flagstaff (J. Vinocur, J. Terriquez, L. Nienstadt)
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Figure
Figure. Phylogeny and geographic distribution of Francisella tularensis isolates, Arizona, 2005–2017. A) Maximum-parsimony tree of 14 F. tularensis subsp. tularensis A.II isolates from humans and other mammals constructed by using single-nucleotide polymorphisms (SNPs) discovered by whole-genome sequencing. The tree is rooted on A.I strain Schu S4. Scale bar indicates number of SNPs. Numbers along branches also indicate the number of SNPs the branches represent. Closely related isolates are indicated with circles of the same color (also indicated in panel B). Numbers within circles correspond to the identification numbers in Appendix 2 Table. B) Known or suspected geographic origins of tularemia cases in Arizona. *Case 5 is represented twice to reflect the 2 possible geographic sources of this infection. Co., county.
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