Associations between properties of a sequence cluster and its capsular diversity.

<p>For each of the fifteen monophyletic sequence clusters, the number of serotypes it contained was plotted against (A) the number of representatives of the sequence cluster; (B) the overall genetic diversity of the sequence cluster, as represented by the number of polymorphic sites identified from whole genome alignments; (C) the number of point mutations reconstructed as having occurred over the history of the sequence cluster; and (D) the number of homologous recombination events reconstructed as having occurred over the history of the sequence cluster.