Table 1 Antimicrobial susceptibility and extended-spectrum beta-lactamase (ESBL) related genes in the 53 E. coli strains causing bovine mastitis. Country of isolation: BE = Belgium, LU = Luxembourg, DE = Germany. AB = antibiotic, the inhibition diameter is presented in mm. AX = amoxicillin; AMC = amoxicillin + clavulanic acid; EQ = ceftiofur, CFQ = cefquinome; CTX = cefotaxime; CTC = cefotaxime + clavulanic acid, OX = cefoxitin; MEM = meropenem. Susceptibility profile: uncolored = sensitive, yellow = intermediary, Red = resistant. ESBL = Extended-spectrum beta-lactamase. CTX-M = gene blaCTX-M. The presence of blaCTX-M is indicated by a number corresponding to the variant. ND = not detected.
