Vitek 2 identification of three isolates (MSK4, MSK7 and MSK9) according to the CLSI/EUCAST guideline^a.

Antimicrobial		MSK4 (MIC)	Interpretation	MSK7 (MIC)	Interpretation	MSK9 (MIC)	Interpretation
β-lactam	Ampicillin	≥32	R	≥32	R	≥32	R
β-lactam+ β-lactamase inhibitor	Piperacillin/tazobactam	≥128	R	≥128	R	≥128	R
	Amoxicillin/clavulanic acid	≥32	R	≥32	R	≥32	R
Cephalosporin	Cefepime	≥64	R	32	R	32	R
	Cefoperazone/sulbactam	≥64	R	≥32	*R	≥64	R
	Ceftriaxone	≥64	R	≥64	R	≥64	R
	Cefuroxime	≥64	R	≥64	R	≥64	R
	Cefuroxime axetil	≥64	R	≥64	R	≥64	R
Carbapenem	Meropenem	≥16	R	8	R	8	R
	Imipenem	8	R	≤0.25*	*I	≤0.25*	*I
	Ertapenem	≥8	R	4	R	≥8	R
Aminoglycosides	Amikacin	≥64	R	≥64	R	≥64	R
	Gentamicin	≥16	R	≥16	R	≥16	R
Fluroquinolone	Ciprofloxacin	≥4	R	≥4	R	≥8	R
	Nalidixic acid	≥32	R	≥32	R	≥32	R
Nitrofuran	Nitrofurantoin	128	R	64	I	128	R
Polymyxin	Colistin	≥16	R	≥8	R	≥16	R
Folate pathway	Trimethoprim/sulfamethoxazole	≤20	S	≥320	R	≥320	R
Glycylcyclines	Tigecycline	2	S	≤0.5	S	2	S

^aS: susceptible; I: intermediate; R: resistant; MIC: minimum inhibitory concentration.