Abstract: Klebsiella quasipneumoniae isolate SBH035 was recovered from a patient in Jiangsu Province, China. The isolate showed resistance to ampicillin, cefazolin, cefotaxime, meropenem, ceftazidime–avibactam, and fosfomycin. The carbapenemase-encoding gene bla _NDM-7 was identified, and whole genome sequencing analysis indicated that bla _NDM-7 was located in an IncX3 plasmid with a conserved structure of IS 26 -ΔcutA-tat-trpF-ble _MBL-bla _NDM-7-ISAba125 -IS 3000 -ΔTn2. To date, this is the first identification of a bla _NDM-7-harboring IncX3 plasmid in ST196 K. quasipneumoniae from a patient in China. Greater attention to controlling the dissemination of IncX3 plasmids is needed owing to potential horizontal transfer via mobile genetic elements.
Keywords: Klebsiella quasipneumoniae , ST196, carbapenem resistance, bla _NDM-7, IncX3 plasmid