Table 5.

Antibiotic susceptibility of Pseudomonas species isolated from freshwater and mixed liquor samples from Fort Beaufort.

Antibiotics		P. aeruginosa			P. putida			P. fluorescens			Other Pseudomonas species
		S (%)	I (%)	R (%)	S (%)	I (%)	R (%)	S (%)	I (%)	R (%)	S (%)	I (%)	R (%)
Penicillin	PG	0	0	100	0	0	100	0	0	100	0	0	100
	AP	0	0	100	0	0	100	0	0	100	33.33	0	66.67
	OX	0	0	100	0	0	100	0	0	100	0	0	100
Tetracycline	T	0	0	100	0	40	60	0	0	100	0	33.33	66.67
	MN	0	0	100	0	80	20	0	50	50	33.33	0	66.67
Quinolones	CIP	100	0	0	100	0	0	100	0	0	100	0	0
	NA	0	0	100	20	0	80	0	100	0	0	33.33	66.67
	OFX	100	0	0	80	0	20	100	0	0	100	0	0
Cephems	CTX	0	0	100	20	60	20	100	0	0	0	33.33	66.67
	KF	0	0	100	0	0	100	50	50	0	0	0	100
Phenicols	C	0	0	100	0	20	80	0	0	100	0	33.33	66.67
Macrolides	E	0	0	100	0	0	100	0	0	100	0	0	100
Aminoglycosides	GM	100	0	0	100	0	0	100	0	0	100	0	0
Glycopeptides	VA	0	0	100	0	0	100	0	0	100	0	0	100
Nitrofurans	NI	0	0	100	0	0	100	0	0	100	0	0	100
Folate pathway inhibitors	TM	0	0	100	0	0	100	0	0	100	0	0	100
	SMX	0	0	100	0	0	100	50	0	50	0	0	100
β-lactams	SAM	0	0	100	0	20	80	100	0	0	33.33	0	66.67
Lincosamides	CD	0	0	100	0	0	100	0	0	100	0	0	100
Ansamycins	RP	0	0	100	0	0	100	0	0	100	0	0	100

Legend: PG—penicillin, AP—Ampicillin, OX—Oxacillin, T—Tetracycline, MN—Minocycline, CIP—Ciprofloxacin, Na—Nalidixic acid, OFX—Ofloxacin, CTX—Cefotaxime, KF—Cephalothin, C—Chloramphenicol, E—Erythromycin, GM—Gentamicin, VA—vacomycin, NI—Nitrofurantoin, TM—Trimethoprim, SMX—Sulphamethoxazole, SAM—Ampicillin-sulbactam, CD—Clindamycin, RP—Rifamycin.