Fig. 2

Whole-genome phylogenetic tree of local bla _NDM-positive bacteria. Maximum likelihood trees were constructed based on sequence alignments of E. coli (a) and K. pneumoniae (b). JJ1886 and HS11286 are the reference genomes for E. coli and K. pneumoniae, respectively. The branch lengths were calculated by RAxML and reflect the number of expected mutations per site. Bootstrap values are in a scale of 0–100, and are shown at each node in grey