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Table 3 Antimicrobial susceptibility (%) of E. coli , Klebsiella spp. and P. mirabilis in non-repeated samples

From: Characterisation of bacterial growth and antimicrobial susceptibility patterns in canine urinary tract infections

Antimicrobial Breakpoint S Escherichia coli Klebsiella spp. Proteus mirabilis
All A B C All A B C All A B C
(mg/L) (429) (204) (110) (115) (11) (3) (2) (69 (55) (17) (17) (21)
Ampicillin ≤ 8 87.9 91.2 85.5 84.3 0.0 0.0 0.0 0.0 90.9 88.2 94.1 90.5
Amoxicillin/Clavulanic acid ≤ 8 87.2 89.7 85.5 84.3 72.7 66.7 100 66.7 94.5 100 94.1 90.5
Cefotaxime ≤ 1 99.8 99.5 100 100 100 100 100 100 98.2 100 94.1 100
Gentamicin ≤ 2 94.9 95.1 93.6 95.7 90.9 100 100 83.3 83.6 82.4 82.4 85.7
Enrofloxacin ≤ 0.5 97.9 98.5 95.5 99.1 90.9 100 100 83.3 96.4 100 88.2 100
Tetracycline ≤ 4 92.1 95.1 90.0 88.7 100 100 100 100 5.5 5.9 5.9 4.8
Trimethoprim/Sulphametoxazole ≤ 2/38 92.3 96.6 89.1 87.8 90.9 100 100 83.3 89.1 88.2 88.2 90.5
Nitrofurantoin ≤ 32 98.4 99.5 98.2 96.5 27.3 33.3 50.0 16.7 9.1 5.9 11.8 9.5
  1. Breakpoints for susceptibility (BP S) (mg/L) are indicated. The number of samples is shown inside brackets. The three submission categories; small animal referral hospitals, small animal clinics and mixed veterinary practices are labelled A, B and C, respectively.