Table 2.

Antimicrobial descriptions, classes and resistance breakpoints for Salmonella enterica [24, 25]

Antimicrobial	Abbrev	Description	Breakpoint (mg/dl)	Drug class
Ampicillin	AMP	Aminopenicilln	⩾32	β-lactams (βL)
Amoxicllin + Clav. acid	AMC	Augmented aminopenicillin	⩾32
Ceftriaxone	AXO	Third-generation cephalosporin	⩾4
Cefoxitin	FOX	Cephamycin	⩾32
Ceftiofur	TIO	Third-generation cephalosporin	⩾8
Streptomycin	STR	Aminoglycoside	⩾64	Aminoglycosides (AG)
Gentamicin	GEN	Aminoglycoside	⩾16
Kanamycin	KAN	Aminoglycoside	⩾64
Nalidixic acid	NAL	Quinolone	⩾32	Fluoroquinolones (FQ)
Ciprofloxacin	CIP	Fluoroquinolone	⩾1
Sulfisoxazole	FIS	Sulfonimide monodrug	⩾512	Folate pathway inhibitor (FPI)
Trimethoprim + Sulfamethoxazole	COT	Augmented sulfonamide	⩾4
Tetracycline	TET	Tetracycline	⩾16	Tetracycline (TC)
Chloramphenicol	CHL	Phenicol	⩾32	Phenicol (Ph)
Azithromycin	AZI	Azalide	⩾16	Macrolide (MLS)