Susceptibility of imipenem-susceptible but meropenem-resistant Enterobacteriaceae carrying blaIMP-6 to various antibacterials including siderophore cephalosporin, cefiderocol.

Carbapenemase-producing Enterobacteriaceae (CPE) have been spreading worldwide and are a great concern among health care settings ([1][1]). Intriguingly, IMP-6 (encoded by the bla IMP-6 gene), one of the IMP-type metallo-carbapenemases, has been reported to confer the paradoxical imipenem-