Figure 2. Genotypic relatedness of 482 MRSA (A) and 1308 MSSA (B) isolates derived from livestock veterinarians (green), household members of veterinarians (red), control patients (blue) and household members of control patients (yellow), represented as a minimum spanning tree based on MLVA types (MT), which are displayed as circles. The size of each circle indicates the number of isolates with this particular type.

MLVA complexes are indicated in characters e.g. MC398 denotes MLVA complex 398.