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