Table 3.

Antimicrobial resistance of S. aureus isolated from retail food.

Antimicrobial agents	No. of isolates resistant to the tested antimicrobial agents (%)
	Total N = 1,150	Raw meat N = 803	Rice and flour products N = 90	Vegetable salads N = 85	Sandwich N = 69	Meat and its by products N = 46	Eggs and by products N = 43	Others N = 14
Penicillin	83.7 (963)	84.1 (675)	83.3 (75)	80.0 (68)	82.6 (57)	84.8 (39)	90.7 (39)	71.4 (10)
Oxacillin	9.0 (103)	8.7 (70)	15.6 (14)	1.2 (1)	10.1 (7)	10.9 (5)	9.3 (4)	14.3 (2)
Cefoxitin	9.7 (111)	9.6 (77)	15.6 (14)	4.7 (4)	8.7 (6)	6.5 (3)	14.0 (6)	7.1 (1)
Vancomycin	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)
Daptomycin	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)	0.0 (0)
Erythromycin	52.1 (599)	55.0 (442)	44.4 (40)	37.7 (32)	43.5 (30)	52.2 (24)	48.8 (21)	71.4 (10)
Gentamicin	13.3 (153)	15.1 (121)	10.0 (9)	9.4 (8)	4.4 (3)	13.0 (6)	11.6 (5)	7.1 (1)
Tetracycline	38.2 (439)	42.8 (344)	27.8 (25)	25.9 (22)	23.2 (16)	32.6 (15)	32.6 (14)	21.4 (3)
Ciprofloxacin	13.6 (156)	17.4 (140)	5.6 (5)	4.7 (4)	2.9 (2)	6.5 (3)	2.3 (1)	0.0 (0)
Clindamycin	31.0 (356)	33.4 (268)	26.7 (24)	20.0 (17)	24.6 (17)	26.1 (12)	25.6 (11)	57.1 (8)
Trimethoprim-sulfamethoxazole	6.1 (70)	6.4 (51)	5.6 (5)	4.7 (4)	1.5 (1)	8.7 (4)	4.7 (2)	21.4 (3)
Chloramphenicol	9.9 (114)	12.0 (96)	4.4 (4)	4.7 (4)	4.4 (3)	6.5 (3)	7.0 (3)	0.0 (0)
Linezolid	67.7 (778)	68.6 (551)	71.1 (64)	64.7 (55)	55.1 (38)	76.1 (35)	55.8 (24)	78.6 (11)
Pansusceptible	2.4 (28)	1.5 (12)	4.4 (4)	7.1 (6)	0.0 (0)	10.9 (5)	2.3 (1)	0.0 (0)
≥ 1 antimicrobial	97.6 (1,122)	98.5 (791)	95.6 (86)	92.9 (79)	100.0 (69)	89.1 (41)	97.7 (42)	100.0 (14)
≥ 3 class of antimicrobials	57.5 (661)	62.4 (501)	46.7 (42)	48.2 (41)	42.0 (29)	39.1 (18)	48.8 (21)	64.3 (9)
≥ 8 class of antimicrobials	2.4 (28)	3.0 (26)	1.1 (1)	0.0 (0)	1.4 (1)	0.0 (0)	0.0 (0)	0.0 (0)

N, total number of S. aureus isolates tested for susceptibility in different retail food.