Fig. 2.

MGT4 STs offer a useful description of continent specific and global clades. (a) At each MGT level from MGT2 to MGT8, we identified continent restricted STs where more than 70 % of the isolates belonged to the same continent. MGT4 was found to have the highest number of isolates belonged to these continental limited STs. (b) There were 45 MGT4-STs of more than 50 isolates representing 73.5 % of the total 26 670 isolates, and the majority of these STs belonged to MGT4-CC1 and CC13. The number, size and continental makeup of these STs are shown with the left Y axis showing MGT4 STs, the right Y axis showing MGT4 CCs and the X axis showing number of isolates. Continental distribution of each ST is shown by different colours in each row.