FIG 3.

SNV analysis of two LA-MRSA outbreaks displaying clustering indicative for transmission. The tree was based on 6,461 SNV positions, and clustering was done using a categorical coefficient. Each node in this minimum spanning tree represents a single LA-MRSA isolate. Nodes with identical colors represent isolates from the same LA-MRSA outbreak. On the right side, the SNV positions relative to the sequence of the isolate of the index patients of each of the outbreaks are given. Each colored ring represents a single isolate belonging to the outbreak.