Table 1 Resistance (percent, 95% CI in brackets) and distribution (percent) of MICs for Escherichia coli(n = 95).
From: Antimicrobial resistance and virulence factors in Escherichia coli from swedish dairy calves
Antimicrobial | Range tested (mg/L) | Cut-off value (mg/L) | Resistance | Minimum Inhibitory Concentration (mg/L) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
≤0.03 | 0.06 | 0.12 | 0.25 | 0.5 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 | 512 | 1024 | 2048 | >2048 | ||||
Ampicillin | 0.25-32 | >8 | 27.4 (18.7-37.5) | 0 | 0 | 11.6 | 48.4 | 12.6 | 0 | 0 | 1.1 | 26.3 | |||||||||
Ceftiofur | 0.12-16 | >1 | 0.0 (0.0-3.8) | 0 | 38.9 | 53.7 | 7.4 | 0 | 0 | 0 | 0 | ||||||||||
Chloramphenicol | 1-128 | >16 | 5.3 (1.7-11.9) | 1.1 | 9.5 | 74.7 | 9.5 | 0 | 0 | 0 | 0 | 5.3 | |||||||||
Enrofloxacin | 0.03-4 | >0.12 | 13.7 (7.5-22.3) | 18.9 | 61.1 | 6.3 | 3.2 | 6.3 | 2.1 | 1.1 | 0 | 1.1 | |||||||||
Florfenicol | 4-32 | >16 | 0.0 (0.0-3.8) | 66.3 | 30.5 | 3.2 | 0 | ||||||||||||||
Gentamicin | 0.5-64 | >2 | 0.0 (0.0-3.8) | 25.3 | 68.4 | 6.3 | 0 | 0 | 0 | 0 | 0 | ||||||||||
Nalidixic acid | 1-128 | >16 | 13.7 (7.5-22.3) | 2.1 | 31.6 | 51.6 | 1.1 | 0 | 1.1 | 3.2 | 4.2 | 5.3 | |||||||||
Neomycin | 2-16 | >8 | 5.3 (1.7-11.9) | 87.4 | 5.3 | 2.1 | 0 | 5.3 | |||||||||||||
Streptomycin | 2-256 | >16 | 44.2 (34.0-54.8) | 1.1 | 16.8 | 32.6 | 5.3 | 2.1 | 14.7 | 8.4 | 10.5 | 8.4 | |||||||||
Sulphonamide | 16-2048 | >256 | 31.6 (22.4-41.9) | 47.4 | 17.9 | 3.2 | 0 | 0 | 0 | 1.1 | 1.1 | 29.5 | |||||||||
Tetracycline | 0.5-64 | >8 | 31.6 (22.4-41.9) | 37.9 | 27.4 | 2.1 | 1.1 | 0 | 1.1 | 0 | 30.5 | ||||||||||
Trimethoprim | 0.25-32 | >2 | 5.3 (1.7-11.9) | 37.9 | 41.1 | 14.7 | 1.1 | 1.1 | 0 | 0 | 0 | 4.2 | |||||||||