Table 3.

Comparison and percentage of resistant Salmonella serotypes to 13 antibiotics in two different studies from Lagos

Antibiotic used	Percentage of Salmonella serotypes in 2000∗ and the present study
	S. Typhi		S. Paratyphi		S. Arizonae		S. Enteritidis†
	2000∗ (n=68)	Present study (n=21)	2000∗ (n=17)	Present study (n=11)	2000∗ (n=16)	Present study (n=18)	Present study (n=27)
Ampicillin	91.2	100	88.2	100	93.8	100	100
Co-trimoxazole	61.8	71.4	64.7	63.6	56.3	61.1	85.2
Chloramphenicol	73.5	85.7	70.6	81.8	87.5	88.9	85.2
Gentamicin	29.4	81.0	29.4	81.8	31.3	83.3	88.9
Tetracycline	64.7	90.5	64.7	90.1	68.8	88.9	92.6
Streptomycin	32.4	66.7	35.3	63.6	37.5	72.2	59.3
Cefotaxime	51.5	66.7	35.3	54.5	31.5	55.5	59.3
Nalidixic acid	13.2	38.1	17.7	27.3	12.5	27.8	33.3
Ciprofloxacin	0.0	14.3	0.0	18.2	0.0	11.1	14.8
Ofloxacin	0.0	14.3	0.0	18.2	0.0	11.1	14.8
Colinstin sulphate	44.1	52.4	41.2	27.3	37.5	55.6	40.7
Amoxicillin	ND	57.1	ND	63.6	ND	55.6	59.3
Cefoperazone	ND	57.1	ND	72.3	ND	61.1	55.6

∗ Data obtained from reference (10);

† Data not available; ND=Not determined; n=Number of isolates evaluated