Table 2.

Antimicrobial susceptibility of CnsECC isolates ^a.

Antimicrobial Agents	R		I/SDD b		S		MIC (μg/mL)
	n	%	n	%	n	%	MIC50	MIC90	Range
Ampicillin	157	100.0	0	0	0	0	-	-	-
Amikacin	1	0.6	0	0	156	99.4	≤2	16	≤2–≥64
Ceftazidime	148	94.3	2	1.3	7	4.5	≥64	≥64	2–≥64
Cefmetazole	157	100.0	0	0	0	0	≥64	≥64	≥64
Cefazolin	157	100.0	0	0	0	0	≥64	≥64	≥64
Ertapenem	156	99.4	1	0.6	0	0	4	≥8	1–≥8
Cefepime	65	41.4	33	21.0	59	37.6	8	≥64	≤1–≥64
Gentamicin	38	24.2	7	4.5	112	71.3	2	≥16	≤1–≥16
Levofloxacin	103	65.6	12	7.6	42	26.8	≥8	≥8	≤0.12–≥8
Meropenem	31	19.7	5	3.2	121	77.1	0.5	8	≤0.25–≥16
Ampicillin/sulbactam	156	99.4	0	0	1	0.6	-	-	-
Sulfamethoxazol/trimethoprim	113	72.0	0	0	44	28.0	≥16/304	≥16/304	≤1/19–≥16/304
Tigecycline	81	51.6	10	6.4	66	42.0	≥8	≥8	≤0.5–≥128
Piperacillin/tazobactam	91	58.0	37	23.6	29	18.5	≥128/4	≥128/4	≤4/4–≥128/4

^a Abbreviations: R, resistant; I, intermediate; S, susceptible; SDD, susceptible-dose dependent. ^b SDD for cefepime.