Volume 31, Number 7—July 2025
Research
Epidemiologic and Genomic Investigation of Sexually Transmitted Shigella sonnei, England
Figure 5

Figure 5. Maximum-likelihood phylogenetic tree of clonal complex 152 within nucleotide cluster t25:1 found during an epidemiologic and genomic investigation of sexually transmitted Shigella sonnei from presumptive men who have sex with men, England, 2016–2023. Included in the tree were 1,325 isolates. Blue, t10.377 cluster; green, t10.2218 cluster; red, t10.1814. The outer ring indicates presence of blaCTX-M; red, blaCTX-M-15; blue, blaCTX-M-27; orange, blaCTX-M-134; green, blaCTX-M-55. Presumptive men who have sex with men was defined as cases among male adults (>16 years of age) without a history of travel or where travel history was unknown.
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