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Table 1 Genotypic and phenotypic characteristics in three Escherichia coli isolated from Swedish dogs from May 2017 to May 2018, and from a screening study conducted in 2012

From: Low occurrence of extended-spectrum cephalosporinase producing Enterobacteriaceae and no detection of methicillin-resistant coagulase-positive staphylococci in healthy dogs in Sweden

YearIsolateGenes encoding ESBLMLSTSerotypePlasmid replicon typesaGenes encoding antibiotic resistanceAntibiotic resistanceMIC for Azb
2012CH79ctxblaCMY-2ST38O7:H18colMG828, B/O/K/Z, FIB FII, p0111mdfAAm, Cx, Cm4
2017ACS2blaCTX-M-1ST4496O8:H28FIA, HI1A, HI1B, Q1aac(3)-IIb, aadA2, aph(3″)-Ib, aph(6)-Ib, catA1, dfrA12, mdfA, sul1, sul2, tetA, mphAAm, Cx, Cm, Chl, Gm, Su, Tm, Tc8
ACS5blaCTX-M-55ST354O1:H34col156, FIA, FIB, FII, Q1blaTEM-1B, aac(3)-IId, aadA5, ant(3″)-Ia, aph(3″)-Ib, aph(6)-Ib, catA1, dfrA17, mdfA, mphA, sul1, sul2, tetA, tetDAm, Cx, Cm, Chl, Ci, Gm, Nal, Su, Tm, Tc16
ACS6blaCTX-M-27ST131O25:H4col156, col8282, FIA, FIB, FIIaadA5, ant(3″)-Ia, aph(3″)-Ib, aph(6)-Id, dfrA17, mdfA, mphA, sul1, sul2, tetAAm, Cx, Cm, Ci, Nal, Su, Tm, Tc32
  1. All isolates were tested for susceptibility against ampicillin (Am), azithromycin (Az), cefotaxime (Cx), ceftazidime (Cm), chloramphenicol (Chl), ciprofloxacin (Ci), colistin (Co), gentamicin (Gm), meropenem (Me), nalidixic acid (Nal), kanamycin (Km), sulfamethoxazole (Su), trimethoprim (Tm), tigecycline (Tg) and tetracycline (Tc). Isolates were defined as resistant if minimum inhibitory concentration (MIC) was above the epidemiological cut-off values (ECOFFs) defined by EUCAST
  2. aPlasmidfinder ( cannot differentiate between incB, incO, incK, incZ
  3. bNo ECOFF defined by EUCAST