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Volume 31, Number 1—January 2025
Dispatch

Toxigenic Corynebacterium diphtheriae Infections in Low-Risk Patients, Switzerland, 2023

Pascal Urwyler, Daniel Goldenberger, Kerstin Grosheintz, Rahel Tarnutzer, Maike Markstein, Celine Sucker, Anna-Maria Balestra, Lukas Merki, Michelle Baumann, Nicolas Gürtler, Aurélien Emmanuel Martinez, Matthias von Rotz, Branislav Ivan, Claudia Lang, Pascal Schläepfer, Peter M. Keller1, Eva Wuerfel1, and Sarah Tschudin-Sutter1
Author affiliation: University Hospital Basel, University of Basel, Basel, Switzerland (P. Urwyler, D. Goldenberger, M. Baumann, N. Guertler, A.E. Martinez, M. von Rotz, B. Ivan, C. Lang, P. Schläepfer, P.M. Keller, S. Tschudin-Sutter); Canton of Basel-Stadt, Basel (K. Grosheintz, R. Tarnutzer, M. Markstein, C. Sucker, E. Wuerfel); St. Claraspital Basel (A.-M. Balestra, L. Merki)

Main Article

Figure

Sequencing data from study of toxigenic Corynebacterium diphtheriae infections in low-risk patients, Switzerland, 2023. Maximum-likelihood single-nucleotide polymorphism (SNP) phylogeny (A) and SNP matrix (B) of C. diphtheriae isolates derived from patient B, patient C, and 5 asylum seekers (AS). Numbers at the tree nodes in panel A denote bootstrap values as percentages from 1,000 replicates; scale bar indicates substitutions per site. Matrix in panel B contains the pairwise number of SNP differences used to generate the tree. We used a 3-color scale, where blue represents lowest values, red highest values, and white intermediate values.

Figure. Sequencing data from study of toxigenic Corynebacterium diphtheriae infections in low-risk patients, Switzerland, 2023. Maximum-likelihood single-nucleotide polymorphism (SNP) phylogeny (A) and SNP matrix (B) of C. diphtheriae isolates derived from patient B, patient C, and 5 asylum seekers (AS). Numbers at the tree nodes in panel A denote bootstrap values as percentages from 1,000 replicates; scale bar indicates substitutions per site. Matrix in panel B contains the pairwise number of SNP differences used to generate the tree. We used a 3-color scale, where blue represents lowest values, red highest values, and white intermediate values.

Main Article

1These senior authors contributed equally to this article.

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