A phylogenetic tree produced using PhyloSift. The numbers located on each node is a confidence value between 0 and 1, with values near 1 indicating that the branch at that node exists with high probability. The scale is number of substitutions per site. E. coli O157 SvETEC and E. coli O157:K88 734/3 were placed into a single clade (red). The most closely related isolate was an avian pathogenic E. coli O78. Various completed and draft E. coli O157 genomes taken from the GenBank database clustered together (blue), with a confidence value of 1.