Table 4.

SCCmec typing, resistance profile, and biofilm production of S. haemolyticus isolates.

No. of isolates	SCCmec typing			Resistance profilea				Biofilm productionb
	mec class	ccr type	SCCmec	CLI	TET	LZD	ERY	Glucose	NaCl
8	C2	5	V	7 (88)	3 (38)	0 (0)	7 (88)	7 (88)	4 (50)
1	C2	1 + 2 + 5	Variant	0 (0)	0 (0)	0 (0)	0 (0)	1 (100)	0 (0)
3	C2	1 + 4 + 5	Variant	3 (100)	3 (100)	0 (0)	3 (100)	3 (100)	2 (67)
12	NT	4	NT	10 (83)	3 (25)	0 (0)	11 (92)	8 (67)	5 (42)
1	NT	5	NT	1 (100)	1 (100)	0 (0)	1 (100)	1 (100)	0 (0)
30	NT	NT	NT	30 (100)	3 (10)	1 (3)	30 (100)	23 (77)	18 (60)

NT, not typeable; CLI, clindamycin; TET, tetracycline; LZD, linezolid; ERY, erythromycin.

Methicillin-resistance was evaluated using the cefoxitin disk test, minimum inhibitory concentration was determined using the broth microdilution method. Biofilm formation was evaluated by crystal violet staining. Amplification of the ica operon and SCCmec typing were performed by multiplex PCR.

^aAll isolates were resistant to cefoxitin, oxacillin, norfloxacin, levofloxacin and trimethoprim/sulfamethoxazole. All isolates were susceptible to vancomycin.

^bStrong producers.