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. 2022 Nov 9;18:395. doi: 10.1186/s12917-022-03482-3

Table 3.

Minimum inhibitory concentration (MIC) of antibiotics against microorganisms

Antibiotics CLSI Break pointa MIC (μg/ml)
S I R P02 P03 P05 P23 O14
Penicillins
 Penicillin G ≤0.12 ≥0.25 ≤0.06 0.12 ≤0.06 0.25 0.25
 Ampicillin ≤0.25 ≥0.5 ≤0.25 2 ≤0.25 0.5 0.5
Penicillins/ β-lactamase inhibitors
 Amoxicillin/clavulanate ≤2/1 4/2 ≥8/4 ≤0.25/0.12 1/0.5 ≤0.25/0.12 ≤0.25/0.12 ≤0.25/0.12
Cephems
 Cefaclor ≤1 2 ≥4 ≤2 4 ≤2 16 8
 Cefazolin sodium ≤2 4 ≥8 ≤0.5 1 ≤0.5 1 2
Anti-MRSA drugs
 Linezolid ≤2 ≥4 2 4 2 2 2
 Vancomycin ≤1 ≥2 ≤0.5 8 ≤0.5 1 ≤0.5

aAmpicillin and cefazolin sodium used Vet-08 criteria, while M-100 criteria were used for the remaining antibiotics. S, sensitive; I, Intermediate; R, Resistant. CLSI, Clinical & Laboratory Standards Institute