Table 1.

Carbapenemase distribution in study isolates

	Class A		Class B			Class D
Species	KPC	GES	VIM	NDM	IMP	Oxa-48 type	Oxa-23 type	Oxa-24 type	dual	PCR negativea	Total
E. coli			2	3		2				2	9
K. pneumoniae	2		1			27				9	39
K. oxytoca			2							0	2
K. aerogenes										3	3
E. cloacae			2	1		2				3	8
S. marcescens			1	1					2	0	4
P. aeruginosa		2	42		2	1			1	60	108
A. baumannii							17	1	1	2	21
Total	2	2	50	5	2	32	17	1	4	79	194

^aPCR targeting bla_KPC, bla_IMP, bla_VIM, bla_NDM, bla_OXA-48-like, bla_GES, bla_NMC-A/IMI, bla_BIC, and bla_SME. All PCR-negative isolates were phenotypically tested negative for carbapenemase production and thus, these isolates are assumed to express carbapenemase-independent carbapenem resistance