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. Author manuscript; available in PMC: 2024 Apr 1.
Published in final edited form as: Clin Infect Dis. 2020 Nov 5;71(8):e323–e330. doi: 10.1093/cid/ciz1182

Figure 3.

Figure 3.

High-quality single-nucleotide polymorphisms (SNP) phylogenetic tree of Shiga toxin–producing Escherichia coli serogroup O157 isolates involved in the outbreak. Human and environmental isolates sequenced for this outbreak are shown above. Human isolates, denoted by blue bars, span the majority of the tree. Environmental isolates are shown in dark orange bars. Clades A and B contain the majority of isolates for this outbreak and differ by 8–18 SNPs. Environmental isolates fall into both clades A and B and are indistinguishable from human isolates.