Figure 2.
A time-calibrated Bayesian phylogeny for MRSA strains of the lineage ST5-SCCmec II from canine (SA112) and human origins obtained from 116 core genome alignments. Values at nodes indicate the posterior probabilities for each node. The tree is drawn to a time-scale indicated in years. Blue bars indicate the 95% credibility intervals (CI) for some node ages. The 95% CI for all nodes can be seen at Supplementary Figure S1. The year of 2015 was used as a reference point for chronological estimates, which corresponds to the isolation year of the most recent strain used for the tree construction.