Table 4.

Number and antibiotic resistance phenotypes and genotypes of Salmonella enterica strains isolated from water tanks used for cleaning the chicken carcasses.

Numbers of Examined/Positive samples	Serotypes/invA/stn/ompA/ompF	Resistance phenotypes Antibiotics to which the isolates were resistant	Resistance genes
7/2	Salmonella Bardo/positive/positive/positive/positive	non-ESBL-producing* and CR CEPH (CPD, CAZ, CRO); CAC*; and CR (ETP, MEM)	bla SHV,bla TEM,bla OXA-1,bla KPC,bla CMY-2
	Salmonella Magherfelt/positive/positive/positive/positive	non-ESBL-producing* and CR CEPH (FOX, CPD, CTX, CAZ, CRO); CTC*, CAC*; ATM; and CR (ETP, MEM)	bla SHV,bla TEM,bla OXA-1,bla KPC

^*The phenotype of the isolates was determined to be ESBL-producing or non-ESBL-producing based on the results of the double disk-diffusion test with clavulanic acid (CTC or CAC), FOX=Cefoxitin, CPD=Cefpodoxime, CTX=Cefotaxime, CAZ=Ceftazidime, CRO=Ceftriaxone, CPM=Cefepime, ATM=Aztreonam, MEM=Meropenem, ETP=Ertapenem, ESBL=Extended spectrum β-lactamase, ESCR=Extended-spectrum cephalosporins-resistant, CR=Carbapenems-resistant