Table 1 Zone diameter intepretive criteria

S

I

R

S

I

R

S

I

R

S

I

R

Ampicillin 10 μg

≥ 29

-

≤28

≥ 26

19-25

≤18

≥ 17

-

≤16

≥ 17

15-16

≤14

Penicillin 10 μg

≥ 29

-

≥ 29

≥24

-

-

≥15

-

≤14

-

-

-

Cephalothin 30 μg

≥

≤

-

-

-

Cefaperazone 75 μg

-

-

-

-

-

-

-

-

-

≥21

16-20

≤15

Clindamycin 2 μg

≥ 21

15-20

≥ 14

≥19

16-18

≤15

-

-

-

-

-

-

Erythromycin 15 μg

≥ 23

14-22

≥ 14

≥21

16-20

≤15

-

-

-

-

-

-

Gentamycin 10 μg

≥ 12

13-14

≥ 15

≥12

13-14

15≤

≥10

7-9

≤6

≥ 12

13-14

≥ 15

Tetracycline 30 μg

≥ 19

15-18

≥ 14

≥23

19-22

≤18

≥19

15-18

≤14

≥ 19

15-18

≥ 14

Enrofloxacin 5 μg

≥ 20

15-19

≤14

Trimethoprim/sulfa 1,25/23,75 μg

≥ 16

11-15

≥ 10

≥16

11-15

≤10

≥16

11-15

≤10

≥ 16

11-15

≥ 10