Fig. 3

The evolutionary history inferred using the UPGMA method. The analysis involved 22 STs of this study from Jilin province which are shaded in red, another 10 predominant STs of China and selected 120 predominant STs from other countries. Jilin STs with * were newly discovered STs. Excepting ST2370, 2396 and 2398, that were distributed in the first group together with the predominant STs in China, the other newly discovered Jilin STs were distributed in other groups, which showed that these STs had closer relationship with foreign isolates