|
Antibiotic
| |
Inhibition zone diameter
|
|---|
| |
Disc content
|
Size (mm)
|
≤15 mm (R)
|
16–20 mm (I)
|
≥21 mm (S)
|
|---|
|
Penicillin G
|
2 Units
|
24 (0)
| | |
+
|
|
Penicillin G
|
10 Units
|
26.5 (0.07)
| | |
+
|
|
Erythromycin
|
15 μg
|
32 (0)
| | |
+
|
|
Erythromycin
|
10 μg
|
30 (0)
| | |
+
|
|
Ceftriaxone
|
30 μg
|
33.08 (1.31)
| | |
+
|
|
Lincomycin
|
10 μg
|
0 (0)
|
+
| | |
|
Colistin sulphate
|
10 μg
|
0 (0)
|
+
| | |
|
Streptomycin
|
10 μg
|
18.63 (0.88)
| |
+
| |
|
Amikacin
|
30 μg
|
24.83 (0.25)
| | |
+
|
|
Cloxacillin
|
5 μg
|
19 (0)
| |
+
| |
|
Ciprofloxacin
|
10 μg
|
30 (0)
| | |
+
|
|
Norfloxacin
|
10 μg
|
24 (0)
| | |
+
|
|
Chloramphenicol
|
30 μg
|
32.28 (0.4)
| | |
+
|
|
Cefuroxime sodium
|
30 μg
|
34.25 (0.35)
| | |
+
|
|
Tetracycline
|
30 μg
|
29.5 (0.07)
| | |
+
|
|
Tetracycline
|
10 μg
|
24 (0)
| | |
+
|
|
Nalidixic acid
|
30 μg
|
31 (0)
| | |
+
|
|
Ampicillin
|
25 μg
|
32 (0)
| | |
+
|
|
Gentamycin
|
10 μg
|
22.5 (0.71)
| | |
+
|
|
Gentamycin
|
30 μg
|
28 (0)
| | |
+
|
|
Mecillinam
|
25 μg
|
19.72 (0.4)
| |
+
| |
|
Nitrofurantoin
|
300 μg
|
30 (0)
| | |
+
|
|
Sulfamethoxazole/ trimethoprim
|
25 μg
|
31 (0.14)
| | |
+
|
|
Vancomycin
|
30 μg
|
24.75 (0.04)
| | |
+
|
|
Bacitracin
|
10 μg
|
0 (0)
|
+
| | |
|
Novobiocin
|
30 μg
|
34.5 (0.07)
| | |
+
|
|
Kanamycin
|
30 μg
|
24.15 (0.21)
| | |
+
|
|
Neomycin
|
30 μg
|
20 (0)
| |
+
| |
|
Polymixin B
|
300 Units
|
0 (0)
|
+
| | |
|
Oxytetracycline
|
30 μg
|
21 (0)
| | |
+
|
|
Cefamandole
|
30 μg
|
12 (0)
|
+
| | |
- For all experiments coefficient of variation was ≤5 %. Results (zone of inhibition) are expressed as mean (SD).
- R, resistant; I, intermediate; S, susceptible.
