Multiple Antibiotic Resistance-Coliform Bacteria in Some Selected Fish Farms of the Central Region of Ghana

Table 2

Distribution of 63 bacterial isolates and their antibiogram (percentage in brackets).

Organism	Number of isolates	Frequency of bacterial isolates resistant to antibiotics listed below
		COT	GEN	CRX	CHL	CTR	CTX	AMP	TET
Serratia marcescens	1	1 (100.0)	0 (0.0)	1 (100.0)	1 (100.0)	1 (100.0)	1 (100.0)	1 (100.0)	1 (100.0)
Citrobacter freundii	18	4 (22.2)	1 (5.6)	17 (94.4)	3 (16.7)	5 (27.8)	10 (55.5)	18 (100.0)	12 (66.7)
Klebsiella oxytoca	5	5 (100.0)	1 (20.0)	5 (100.0)	5 (100.0)	4 (80.0)	4 (80.0)	5 (100.0)	5 (100.0)
Escherichia coli	11	6 (54.5)	1 (9.1)	9 (81.8)	4 (36.4)	5 (45.5)	6 (54.5)	11 (100.0)	8 (72.8)
Enterobacter aerogenes	2	1 (50.0)	1 (50.0)	1 (50.0)	1 (50.0)	1 (50.0)	1 (50.0)	2 (100.0)	2 (100.0)
Klebsiella pneumoniae	12	9 (75.0)	0 (0.0)	12 (100.0)	6 (50.0)	4 (33.3)	5 (41.7)	12 (100.0)	11 (91.7)
Edwardsiella tarda	3	0 (0.0)	0 (0.0)	3 (100.0)	0 (0.0)	1 (33.3)	3 (100.0)	3 (100.0)	1 (33.3)
Salmonella typhi	5	1 (20.0)	0 (0.0)	4 (80.0)	1 (20.0)	0 (0.0)	2 (40.0)	5 (100.0)	0 (0.0)
Proteus mirabilis	1	0 (0.0)	0 (0.0)	1 (100.0)	0 (0.0)	0 (0.0)	0 (0.0)	1 (100.0)	0 (0.0)
Citrobacter amalonaticus	2	2 (100.0)	0 (0.0)	2 (100.0)	1 (50.0)	0 (0.0)	0 (0.0)	2 (100.0)	1 (50.0)
Shigella sonnei	2	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	0 (0.0)	1 (50.0)	0 (0.0)
Citrobacter diversus	1	0 (0.0)	0 (0.0)	1 (100.0)	0 (0.0)	0 (0.0)	1 (100.0)	1 (100.0)	1 (100.0)
Total	63	29 (46.0)	4 (6.4)	56 (88.9)	22 (34.9)	21 (33.3)	33 (52.4)	62 (98.4)	42 (66.7)

COT = co-trimoxazole; GEN = gentamicin; CRX = cefuroxime; CHL = chloramphenicol; CTR = ceftriaxone; CTX = cefotaxime; AMP = ampicillin; TET = tetracycline.