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Table 2 Antimicrobials used, their symbols and inhibition zone size interpretation for Gram-negative enteric bacteria

From: Escherichia coli O157:H7: distribution, molecular characterization, antimicrobial resistance patterns and source of contamination of sheep and goat carcasses at an export abattoir, Mojdo, Ethiopia

Antimicrobial used a Symbols Diameter of zone of inhibition in mill meter
Resistant ≤ Intermediate Moderately Susceptible Susceptible ≥
Amoxicillin (25 μg) AML 13 14–16 17
Bacitracin (10 μg) B 14 15–16 17
Cefotaxime (5 μg) CTX 14 15–22 23
Cefoxitin (30 μg) FOX 14 15–17 18
Ceftazidime (10 μg) CAZ 12 13–17 18
Cefuroxime Sodium(5 μg) CXM 14 15–22 23
Clindamycine (10 μg) DA 14 15–20 21
Cloxacillin (5 μg) OB 13 14–16 17
Doxycycline (30 μg) DO 13 14–16 17
Kanamycin (30 μg) K 13 14–17 1
Nalidixic acid (30 μg) NAL 13 14–18 19
Nitrofurantoin (300 μg) F 13 14–17 18
Norfloxacin (10 μg) NOR 12 13–16 17
Polymyxin B (300 unit) Pb 8 9–11 12
Vancomycin (30 μg) VA 14 15–16 17
  1. aall are Oxoid products (England)