Antimicrobial Usage, Susceptibility Profiles, and Resistance Genes in Campylobacter Isolated from Cattle, Chicken, and Water Samples in Kajiado County, Kenya

Table 2

Phenotypic antimicrobial resistance profiles for C. coli and C. jejuni isolates.

Antimicrobial agents	No. of resistant isolates (%)	Source and number of isolates showing resistance (%)
		C. coli (N = 29)				C. jejuni (N = 74)
		Cattle	Chicken	Water	Total	Cattle	Chicken	Water	Total
Ampicillin	103 (100)	16 (100)	9 (100)	4 (100)	29 (100)	38 (100)	30 (100)	6 (100)	6 (100)
Tetracycline	100 (97.1)	15 (93.8)	9 (100)	4 (100)	28 (96.6)	36 (94.7)	30 (100)	6 (100)	72 (97.3)
Gentamicin	12 (11.7)	1 (6.3)	2 (22.2)	0	3 (10.3)	6 (15.8)	3 (10)	0	9 (12.2)
Erythromycin	78 (75.7)	15 (93.8)	9 (100)	3 (75)	27 (93.1)	29 (76.3)	19 (63.3)	3 (50)	51 (68.9)
Ciprofloxacin	65 (63.1)	9 (56.3)	7 (77.8)	4 (100)	20 (69)	16 (42.1)	25 (83.3)	4 (66.7)	45 (60.8)
Nalidixic acid	37 (35.9)	1 (6.3)	1 (11.1)	1 (25)	3 (10.3)	15 (39.5)	16 (53.3)	3 (50)	34 (45.9)