TABLE 1.

Antibiotic resistance patterns of serotypes of S. enterica by sensititer assay

Antibiotic compound	Antibiotic resistance pattern fora:
	BF serotype Enteritidis PT13a (ESQRU 21027)b		wt serotype Enteritidis PT13a (ESQRU 21046)		Serotype Enteritidis PT4 (ESQRU 22079)		Serotype Typhimurium (ESQRU 99187)		Serotype Heidelberg (ESQRU 23018)		Serotype Newport (ESQRU 24012)
	Resistance	MIC	Resistance	MIC	Resistance	MIC	Resistance	MIC	Resistance	MIC	Resistance	MIC
Amikacin	S	1	S	1	S	1	S	1	S	≤0.5	S	1
Amoxicillin-clavulanic acid	S	≤1	S	8	S	≤1	S	≤1	S	≤1	R	32
Ampicillin	S	≤1	R	>32	S	2	S	≤1	S	≤1	R	>32
Cefoxitin	S	2	S	1	S	2	S	2	S	1	R	>32
Ceftiofur	S	<0.5	S	0.5	S	1	S	0.5	S	1	R	>8
Ceftriaxone	S	≤0.25	S	≤0.25	S	≤0.25	S	≤0.25	S	≤0.25	I	16
Chloramphenicol	S	4	S	8	S	4	S	4	S	8	R	>32
Ciprofloxacin	S	≤0.015	S	≤0.015	S	≤0.015	S	≤0.015	S	≤0.015	S	0.25
Gentamicin	S	≤0.25	S	≤0.25	S	≤0.25	S	≤0.25	S	≤0.25	S	≤0.25
Kanamycin	S	≤8	S	≤8	S	≤8	S	≤8	S	≤8	S	≤8
Nalidixic acid	S	4	S	4	S	4	S	4	S	4	R	>32
Streptomycin	S	≤32	S	≤32	S	≤32	S	≤32	S	≤32	R	>64
Sulfisoxazole	S	32	S	32	S	32	S	32	S	≤16	R	>256
Tetracycline	S	≤4	R	>32	S	≤4	S	≤4	S	≤4	R	>32
Trimethoprim- sulfamethoxazole	S	≤0.12	S	≤0.12	S	≤0.12	S	≤0.12	S	≤0.12	S	≤0.12

^aS, sensitivity; R, resistance; I, intermediate resistance. MICs are given in μg/ml.

^bStrain numbers are given in parentheses.