Extended Data Fig. 4: The distribution of blaCTX-M genes.

(a) Percentage of blaCTX-M genes detection (dot) and the number of isolates carrying blaCTX-M genes (bar) in the top eleven serovars. (b) Percentage of blaCTX-M genes detection (dot) and the number of isolates carrying blaCTX-M gene (bar) across different periods.