|
Class
|
Antibiotic
|
Content (μg)
|
Zone of inhibition diameter (mm)
|
Antimicrobial susceptibility type1
|
|---|
|
Beta-lactams
|
Penicillin
|
10
|
28.37 ± 0.14
|
I
|
|
Ampicillin
|
10
|
29.01 ± 0.07
|
S
|
|
Cephalosporins
|
Cefazolin
|
30
|
32.41 ± 0.13
|
S
|
|
Aminoglycosides
|
Gentamicin
|
10
|
16.25 ± 0.09
|
I
|
|
Macrolides
|
Erythromycin
|
15
|
24.54 ± 0.31
|
S
|
|
Quinolones
|
Ciprofloxacin
|
5
|
16.09 ± 0.12
|
I
|
|
Sulfonamides
|
Sulfamethoxazole
|
1.25/23.75
|
22.05 ± 0.26
|
S
|
|
Amphenicols
|
Chloramphenicol
|
30
|
27.97 ± 0.15
|
S
|
- 1Inhibiton zones were compared to the breakpoints defined by CLSI (2017) [23] to determine if the bacterium was sensitive (S), resistant (R) or intermediate (I) to the antibiotics tested. Data are expressed as the mean ± SD from three replicates
