Multiple Low Frequency Ultrasound Enhances Bactericidal Activity of Vancomycin against Methicillin-Resistant Staphylococcus aureus Biofilms

Table 1

MICs of antimicrobial agents against MRSA andMSSA strains.

Antimicrobial agents	MIC(μg/mL)			MIC( interpretive criterion(μg/mL)			Quality control standard; (ATCC 29213)
	R1582	152799	ATCC 29213	Susceptible	Intermediate	Resistant
VAN	1	2	0.5	⩽2	4-8	⩾16	0.06-0.5
LIN	1	2	2	⩽4	-	⩾8	1-4
LEV	32	32	0.5	⩽1	2	⩾4	0.5-2

MIC: minimum inhibitory concentration.
VAN:vancomycin; LIN:linezolid; LEV: levofloxacin.
MIC interpretive criterion and quality control standard (ATCC 29213) are based on Clinical and Laboratory Standards Institute guideline.