Determination of Virulence Factors and Resistance Profile of Methicillin-Resistant Staphylococcus aureus Strains among Different Types of spa, agr, and SCCmec

Table 2

Characteristics of antibiotic resistance pattern of MRSA and type of specimen. All results were expressed as percentages.

Type of specimen	ERY		CD		SXT		GM		TE		RA
	S	R	S	R	S	R	S	R	S	R	S	R
Blood	1.3	20.0	0.7	20.7	9.3	12.0	10.7	10.7	7.3	14.0	8.7	12.7
Nasal	3.3	22.7	3.3	22.7	12.7	13.3	10.7	15.3	9.3	16.7	10.7	15.3
Urine	4.7	8.7	2.7	10.7	6.7	6.7	6.7	6.7	4.0	9.3	6.0	7.3
Trachea	0.7	14.0	2.0	12.7	8.0	6.7	2.0	12.7	4.0	10.7	4.0	10.7
Wound	1.3	20.0	4.7	16.7	10.7	10.7	13.3	8.0	6.0	15.3	11.3	10.0
Synovial	0.7	2.7	0.0	3.3	2.7	0.7	2.0	1.3	1.3	2.0	2.0	1.3
Total	12.0	88.0	13.3	86.7	50.0	50.0	45.3	54.7	32.0	68.0	42.7	57.3

ERY: erythromycin; CD: clindamycin; SXT: trimethoprim/sulfamethoxazole; GM: gentamicin; TE: tetracycline; RA: rifampin. All MRSA isolates were susceptible to linezolid, quinupristin/dalfopristin, and teicoplanin. S: sensitive; R: resistant. The frequency percentage was calculated according to the total number of MRSA isolates (55) not according to the number of isolates in each clinical sample. The data is presented as a percentage.