Table 1.

Bacterial isolates used in this study

Isolate no.	Bacterium	Genotype	MIC (μg/ml)a			Reference	NDM-1 qPCR result
			IMP	MER	ETP
1	Providencia stuartii PS	Wild type	1	1	0.12	13	−
2	E. cloacae CIP 7928	Wild type	0.12	0.016	0.12	13	−
3	Serratia marcescens SM	Wild type	0.25	0.125	0.064	13	−
4	E coli Ec1	Wild type	0.06	0.016	0.006	13	−
5	K. pneumoniae KPS1	OKP-A	0.12	0.12	0.032	13	−
6	E. coli	ACC-1	0.12	0.06	0.5	13	−
7	E coli	OXA-1	0.06	0.016	0.006	13	−
8	Proteus mirabilis	OXA-23	0.25	2	0.06	13	−
9	C. freundii 14827984	TEM-1, GES-1	0.25	0.03	0.125	13	−
10	K. pneumoniae ILT-3	CTX-M-19	0.064	0.064	0.064	13	−
11	K. pneumoniae HPA-1	OXA-48, CTX-M-15, SHV-1	1.5	12	32	7	−
12	C. freundii	OXA-48,VEB-1	>32	>32	>32	13	−
13	E. coli	OXA-48, TEM-150	24	32	24	13	−
14	K. pneumoniae A28006	KPC, CTX-M2, TEM-1, SHV-1	16	32	24	13	−
15	E. cloacae HGM	KPC	12	12	12	13	−
16	E. coli	KPC, CTX-M-9, TEM-1	24	16	32	13	−
17	E. coli DIH-1	VIM-19, CTX-M-15, TEM-1	8	4	16	26	−
18	K. pneumoniae DIH-2	VIM-19, CTX-M-15, TEM-1, SHV-1	8	4	16	26	−
19	P. aeruginosa	VIM-4, TEM-1	>32	>32	>32	13	−
20	A. baumannii	IMP-4	>32	>32	>32	13	−
21	E. coli	IMP-1, TEM-1	4	6	12	13	−
22	Pseudomonas aeruginosa	IMP-13	>32	>32	>32	13	−
23	K. pneumoniae A	NDM-1, CTX-M15, TEM-1, SHV-1, CMY-2	>32	>32	>32	17	+
24	K. pneumoniae B	NDM-1, CTX-M15, TEM-1, SHV-1, CMY-2	>32	>32	>32	17	+
25	K. pneumoniae D	NDM-1, CTX-M15, TEM-1, SHV-1, CMY-2	>32	>32	>32	17	+
26	K. pneumoniae F	NDM-1, CTX-M15, TEM-1, SHV-1, CMY-2	>32	>32	>32	17	+
27	K. pneumoniae G	NDM-1, CTX-M15, SHV-1	2	6	2	17	+
28	K. pneumoniae I	NDM-1, CTX-M15, TEM-1, SHV-1, CMY-2	>32	>32	>32	17	+
29	C. freundii A	NDM-1, CTX-M15	>32	>32	>32	22	+
30	E. coli A	NDM-1, CTX-M15, TEM-1	6	4	4	21	+
31	E. coli B	NDM-1, TEM-1	3	3	2	21	+
32	E. cloacae A	NDM-1	8	6	6	17	+

^aIMP, imipenem; MER, meropenem; ETP, ertapenem.