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Table 2 Distribution of susceptible and multi-drug resistant Escherichia coli isolates in dairy cattle and swine

From: Antimicrobial resistance of Escherichia coli and Enterococcus spp. isolated from Estonian cattle and swine from 2010 to 2015

Number of antimicrobials Clinically healthy animals Diagnostic submissions
Dairy cattle (n = 171) Swine (n = 120) Dairy cattle (n = 63) Swine (n = 143)
Number and proportion (%) of susceptible isolates
 Susceptible to all tested anti-microbials/antimicrobials classes* 135 (78.9) 40 (33.3) 12 (19.0) 19 (13.3)
 Resistant to 1–2 antimicrobials/antimicrobial classes 29 (16.9) 46 (38.3) 9 (14.3) 31 (21.7)
Number and proportion (%) of multi-drug resistant isolates
 Resistant to 3–5 antimicrobials 6 (3.5) 33 (27.5) 40 (63.5) 85 (59.4)
 Resistant to 6–8 antimicrobials 0 2 (1.7) 2 (3.2) 8 (5.6)
  1. * Antimicrobial classes: Quinolones (ciprofloxacin and nalidix acid); Aminoglycosides (streptomycin, kanamycin, gentamycin); 3th–4th generation cephalosporines (cephotaxime + cefazidime), sulfamethoxazole + trimethoprim