Figure 1. Combined eBURST analysis of the entire S. suis MLST database (accessed on 2 August 2011) and the complete collection of strains isolated from pigs and humans with invasive S. suis infection described in this study.

Clonal complexes and the predicted founder STs are indicated by blue dots. Secondary founders are indicated by yellow dots. The size of the dots is relative to the number of isolates with the respective ST present in the combined databases. Numbers in magenta correspond to the STs of the Dutch isolates in this study. Clonal complexes relevant to this study are circled and labeled. Isolates cultured from human patients in this study are of CC1 (ST1, ST134 and ST148); and of CC20 (ST20).