Fig. 4

Minimum spanning tree of MLST types from different hosts. Minimum spanning network based on SNPs discovered in the collection of human, swine, and sheep isolates. Each circle corresponds to one MLST type; the circle size gives the proportion of isolates belonging to the MLST type. The color inside each circle represents the host, and indicates the proportion of isolates sampled in the different hosts. Each link between circles indicates one mutational event