Skip to main content

Table 3 Resistance and distribution of MIC for Escherichia coli (n = 17)

From: Etiology and antimicrobial susceptibility of udder pathogens from cases of subclinical mastitis in dairy cows in Sweden

   Distribution (%) of MICa(mg/L)
Substance Resistance
(%)
≤0.08 0.016 0.03 0.06 0.12 0.25 0.5 1 2 4 8 16 32 64 128 256 512 1024 >1024
Ampicillin 5.9        6.25 17.6 47.1 23.50     5.9      
Cefotaxime 0     70.6 23.5               
Ceftiofur 0       35.3 52.9 11.7            
Chloramp-henicol 0          5.9 82.4 11.8         
Ciprofloxacin -   5.9 52.9 35.3                
Florfenicol 0           29.4 64.7 5.9        
Gentamicin 0        5.9 94.1            
Nalidixic acid 0         5.9 47.1 35.3 6.25         
Kanamycin 5.9          17.6 58.8 17.6 5.9        
Streptomycin 5.9           5.9 82.3 5.9   5.9      
Sulpha-metoxazole -             29.4 64.7 5.9      
Tetracycline 5.9         64.7 29.4       5.9     
Trimethoprim 5.9       23.5 70.6        5.9      
  1. a Thin vertical lines denote range of dilutions tested for each substance. MICs above the range are given as the concentration closest to the range. MICs equal to or lower than the lowest concentration tested are given as the lowest tested concentration. Bold vertical lines indicate EUCAST epidemiological cut-off values with exception of ciprofloxacin. When no cut-off value is available isolates are not classified as susceptible or resistant.