Investigation of in vitro susceptibility and resistance mechanisms to amikacin among diverse carbapenemase-producing Enterobacteriaceae

Table 2 Antibacterial activity of amikacin against all strains (MICs, mg/L)

Species	Number of strains	MIC (mg/L)			Resistant strains	Susceptible strains	Resistance rate
Species	Number of strains	MIC50	MIC90	Range	Resistant strains	Susceptible strains	Resistance rate
K. pneumoniae	51	64	1024	0.5–1024	26	25	51.0
E. coli	11	2	1024	1-1024	3	8	27.3
E. cloacae	6	2	2	0.5–64	1	5	16.7
K. aerogenes	2	/	/	1–2	0	2	0
Citrobacter spp*	2	/	/	1–2	0	2	0
Total	72	2	1024	0.5–1024	30	42	41.7

ISSN: 1755-8794