Phylogenetic diversity and relationships among a single S . Montevideo clone. GARLI phylogenetic analysis of the outbreak isolates was performed on a set of 43 concatenated ORFs containing informative SNPs (Table 3). Terminal names, scale bar, branch lengths and bootstrap scores are as in Figure 1. Numbers above the branches represent unique SNPs that define these internal branches. The phylogenetic analysis reported here partitions the S. Montevideo clone into 6 lineages (A-F) and expands upon a previous tree  with the inclusion of 5 more strains and the noted expansion of outbreak strains into clade E. To the right of the tree, each isolate is labeled with the Not 1 pattern that was determined using PFGE with each unique number identifying a new Not 1 pattern.