Fig. 4: Bayesian analysis of ST167 subclade C2.

a Time scaled tree of ST167 subclade C2 consisting of 539 genomes. The pink polygon depicts the node correlating to the TMRCA of HC20 cluster 109409. Metadata identifying HC20 cluster, capsule type and continent of isolation are displayed on the right as columns. b Bayesian skyline plot of subclade C2 genomes with the dotted line corresponding to the TMRCA of the HC20 cluster 109409. The black curve represents the effective population size, with the grey shading representing the 95% confidence interval.