Maximum likelihood phylogeny generated from 16,062 SNPs.

<p>Bootstrap support values are shown over branches. Branch lengths are drawn proportion to the amount of sequence change. Phylogroup membership is indicated with a horizontal bar and the corresponding letter. Pathotypes of each of the <i>E</i>. <i>coli</i> strains is indicated with a color code and their lettered abbreviation adjacent to the strain names of each; commensal strains are abbreviated as “com”.