Table 1 Summary of antimicrobials included in the Vitek 2™ AST-GN 98 card and respective breakpoints used

Amikacin

2 - 64

<=4

8

>=16

Amoxicillin/Clavulanic Acid

2 - 32

<=8

>=16

Ampicillin

2. - 32

<=8

>=16

Cefalexin

4 – 64

<=4

>=8

Ceftiofur

1 – 8

<= 2

>=8

Cefovecin

0.5 - 8

<= 2

4

>=8

Cephalothin

2 - 64

<= 2

4

>=8

Chloramphenicol

2 - 64

<=8

16

>=32

Doxycycline

0.5 - 16

<=4

8

>=16

Enrofloxacin

0.12 – 4

<=0.5

1-2

>=4

Gentamicin

1 – 16

<= 2

4

>=8

Marbofloxacin

0.5 - 4

<=1

2

>= 4

Nitrofurantonin

1 - 16

<=64

>=64

Tetracycline

1 - 16

<=4

8

>=16

Trimethoprim/Sulphamethoxazole

20 – 320

<=40

>=80