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Volume 31, Number 3—March 2025
Research

Diphtheria Outbreak among Persons Experiencing Homelessness, 2023, Linked to 2022 Diphtheria Outbreak, Frankfurt am Main, Germany

Jonas Haller1Comments to Author , Anja Berger1, Alexandra Dangel1, Katja Bengs, Imke Friedrichs, Christian Kleine, Dorothee Schmidt, Maria Goetzens, Udo Goetsch, Michael Hogardt, and Andreas Sing
Author affiliation: Robert Koch Institute, Berlin, Germany (J. Haller); European Centre for Disease Prevention and Control, Stockholm, Sweden (J. Haller); Gesundheitsamt Frankfurt am Main, Frankfurt am Main, Germany (J. Haller, C. Kleine, D. Schmidt, M. Goetzens, U. Goetsch); Bavarian Health and Food Safety Authority, Oberschleißheim, Germany (A. Berger, A. Dangel, K. Bengs, A. Sing); Laborarztpraxis Rhein-Main MVZ GbR, Frankfurt am Main (I. Friedrichs); Elisabethen Straßenambulanz, Frankfurt am Main (M. Goetzens); University Hospital Frankfurt, Frankfurt am Main (M. Hogardt)

Main Article

Figure 2

Minimum-spanning tree of core-genome multilocus sequence type analysis of toxigenic Corynebacterium diphtheria, with 1,553 target loci of the whole-genome sequencing-obtained genomes of the toxigenic C. diphtheriae isolates from an outbreak in 2023 compared with genomes of an outbreak cluster of the same ST (ST574) from a previously reported outbreak among migrants (23). Single-linkage allelic distances are illustrated as a measure of genetic related. FaM, Frankfurt am Main; ST, sequence type.

Figure 2. Minimum-spanning tree of core-genome multilocus sequence type analysis of toxigenic Corynebacterium diphtheria, with 1,553 target loci of the whole-genome sequencing-obtained genomes of the toxigenic C. diphtheriae isolates from an outbreak in 2023 compared with genomes of an outbreak cluster of the same ST (ST574) from a previously reported outbreak among migrants (23). Single-linkage allelic distances are illustrated as a measure of genetic related. FaM, Frankfurt am Main; ST, sequence type.

Main Article

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1These first authors contributed equally to this article.

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