First Report of Foodborne Klebsiella pneumoniae Coharboring bla VIM-1 , bla NDM-1 , and mcr-9

Carbapenem and colistin antibiotics are often the last-resort treatment for severe infections caused by multidrug-resistant bacteria (1–3). Fortunately, most carbapenemase producers are susceptible to colistin, and many colistin-resistant strains have been reported to be sensitive to carbapenems (2–5). The present study is the first report of a Klebsiella pneumoniae strain LM22-1 harboring blaNDM-1, blaVIM-1, and mcr-9, which was recovered from food in Japan.