Multilocus sequence types of carbapenem-resistant Pseudomonas aeruginosa in Singapore carrying metallo-beta-lactamase genes, including the novel bla(IMP-26) gene.

Nine imipenem-resistant Pseudomonas aeruginosa isolates were found to contain a variety of metallo-beta-lactamase genes, including bla(IMP-1), bla(IMP-7), bla(VIM-2), bla(VIM-6), and the novel bla(IMP-26). Multilocus sequence typing showed a diversity of sequence types. Comparison with isolates from an earlier study showed that the epidemic clones from 2000 have not become established.