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Table 1 Zone diameter interpretive criteria (mm) by disk diffusion method for E. coli

From: Molecular characterization and antimicrobial resistance of potentially human‐pathogenic Escherichia coli strains isolated from riding horses

Antimicrobial agents (Disk
Content)
Abbreviations Susceptible Intermediate Resistant References
Amoxicillin/clavulanic acid (20/10 µg) AMC ≥ 18 14–17 ≤ 13 [9]
Cefazolin (30 µg) CZ ≥ 23 20–22 ≤ 19 [9]
Ceftriaxone (30 µg) CRO ≥ 23 20–22 ≤ 19 [9]
Amikacin (30 µg) AK ≥ 17 15–16 ≤ 14 [9]
Streptomycin (10 µg) S ≥ 15 12–14 ≤ 11 [9]
Gentamicin (10 µg) GN ≥ 16 13–15 ≤ 12 [10]
Trimethoprim-sulphamethoxazole (1.25/23.7 µg) SXT ≥ 16 11–15 ≤ 10 [9]