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. 2020 Jul;26(7):1456–1464. doi: 10.3201/eid2607.200225

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Phylogenic tree constructed by using unweighted pair group method with arithmetic mean and core genome multilocus sequence typing data of Listeria monocytogenes isolates from a large listeriosis outbreak, Germany. Green indicates clinical isolates of Epsilon1a subcluster; blue indicates food isolates of Epsilon1a subcluster; pink indicates isolates from the Epsilon1 cluster; violet indicates 2 complex type 4465 isolates not belonging to Epsilon1a from earlier listeriosis cases in July 2017 and June 2018; yellow indicates isolates from a listeriosis outbreak in South Africa (11); black indicates reference strain 10-092876-0769 LM12 used for SNP calling (Appendix Figure 2). Scale bar indicates allelic substitutions per site. SNP, single-nucleotide polymorphism.