FIG. 2.

Population snapshot based on eBURST analysis of 1,102 pneumococcal isolates, 539 and 563 isolates recovered in 2006 and 2008, respectively. Each sequence type is represented by a numbered circle, the size of which corresponds to the number of isolates. STs linked by a line differ in one of seven alleles; the STs that are linked by lines constitute a clonal complex. STs considered founders of clonal complexes are indicated by blue circles. STs whose numbers are shown in red were identified in both data sets, those shown in black were identified in 2006 only, and those shown in green were identified in 2008 only. As indicated by lines, STs are clustered according to associated serotype, with PCV7 serotypes to the left, non-PCV7 serotypes to the right, and STs identified with both PCV7 and non-PCV7 serotypes in the middle.