Figure 3

UPGMA phylogenetic tree of 53 GBS strains based on genome-wide average nucleotide identity (ANI) analysis. The set includes ten strains that were whole genome sequenced in this study and 43 reference strains that represent major GBS phylogenetic lineages. Inner circle: Strain host origin Middle circle: clonal clusters Outer circle: rsp-profile identity of reference strains. (Scale bar: nucleotide substitutions per site).