Antimicrobial Resistance Phenotype of Staphylococcus aureus and Escherichia coli Isolates Obtained from Meat in the Formal and Informal Sectors in South Africa

Table 3

Antibiotic susceptibility pattern of Staphylococcus aureus isolates in the formal () and informal () meat sectors.

Antibiotic class	Antimicrobial agents	Code	Potency (μg)	Formal		Informal
				S (%)	R (%)	S (%)	R (%)
Tetracycline	Tetracycline	T	30	50 (67.6)	24 (32.4)	12 (17.6)	56 (82.4)
Ansamycins	Rifampicin	RP	5	43 (58.1)	31 (41.9)	21 (30.9)	47 (69.1)
Penicillin	Penicillin	PG	10	35 (47.3)	39 (52.7)	11 (16.2)	57 (83.8)
	Ampicillin	AMP	10	30 (40.50)	44 (59.5)	16 (23.5)	52 (76.5)
Phenicols	Chloramphenicol	C	10	71 (95.9)	3 (4.1)	55 (80.9)	13 (19.1)
Macrolides	Erythromycin	E	15	37 (50)	37 (50)	27 (39.7)	41 (60.3)
Aminoglycosides	Gentamycin	GM	10	62 (83.8)	12 (16.2)	57 (83.8)	11 (16.2)
	Amikacin	AK	30	68 (91.9)	6 (8.1)	46 (67.6)	22 (32.4)
Quinolones	Ciprofloxacin	CIP	5	67 (90.5)	7 (9.5)	56 (82.4)	12 (17.6)
	Ofloxacin	OFX	5	66 (89.2)	8 (10.8)	59 (86.8)	9 (13.2)
Foliate pathway inhibitor	Sulfamethoxazole/trimethoprim	TS	25	69 (93.2)	5 (6.8)	42 (61.8)	26 (38.2)
Lincosamides	Clindamycin	CID	2	19 (25.7)	55 (74.3)	15 (22.1)	53 (77.9)

S: susceptible; R: resistance.