Table 3 Antibiotic resistance profile of Listeria monocytogenes isolates from raw kebab and hamburger samples

Macrolides

Azithromycin

15 μg

< 17

17–21

≥ 22

24/36

7/36

5/36

Cephalosporins

Ceftriaxone

30 μg

< 15

15–20

≥ 21

9/36

5/36

22/36

Cephalexin

30 μg

< 12

12–17

≥ 18

34/36

2/36

0/36

Penicillins

Penicillin

10 IU

< 8

8–28

≥ 29

36/36

0/36

0/36

Amoxicillin

25 μg

< 14

14–24

≥ 25

36/36

0/36

0/36

Aminoglycosides

Gentamicin

10 μg

< 18

18–20

≥ 21

9/36

27/36

0/36

Tetracyclines

Tetracycline

30 μg

< 22

22–24

≥ 25

31/36

5/36

0/36

Phenicols

Chloramphenicol

30 μg

< 18

18–20

≥ 21

24/36

11/36

1/36