Network Analysis. Network analysis representing the most parsimonious relationship between sequence variants, separated by single base pair mutations (dotted lines). From 92 isolates, three lineages were defined (those with more than 10 isolates/sequence type, plus their most closely associated sequence types). Each color represents a lineage, each circle represents a sequence variant, and its size indicates the number of isolates comprising each sequence variant. Numbers inside each node indicate the number of isolates comprising that sequence type. All other nodes represent 1, 2, or 4 isolates, scaled to size.
Whittaker et al. BMC Evolutionary Biology 2012 12:209 doi:10.1186/1471-2148-12-209