Objective To investigate the drug resistance genes in carbapenem-resistant Enterobacteriaceae isolated from the First Affiliated Hospital of Zhengzhou University. Methods The clinical isolates of Escherichia coli and Klebsiella pneumoniae were collected from June 2014 to December 2015,and they were screened by Vitek 2 Compact automatic bacterium identification system,according to the Clinical and Laboratory Standards Institute(CLSI) 2013. A total of 29 isolates being resistant to imipenem/meropenem were sor...