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Table 6 Phenotypic resistance and resistance determinants found in S. enterica isolates in this study

From: Occurrence of Salmonella enterica and Escherichia coli in raw chicken and beef meat in northern Egypt and dissemination of their antibiotic resistance markers

Source

Serovar

Resistance phenotype

Resistance genes/class 1 integrons

Poultry

 Fresh poultry meat

Typhimurium

CPD, CTX, NAL

bla CTX-M-1, qnrA, qnrB, qnrS

 Fresh poultry meat

Typhimurium

AMC, AMP, CPD

bla TEM-1

 Fresh poultry meat

Enteritidis

AMP, CTX, TET

bla CTX-M-1, bla TEM-1

 Fresh poultry meat

Kentucky

AMC, AMP, NAL, STR, TET, T/S

bla TEM-1, qnrA

 Fresh poultry organs (liver)

Typhimurium

AMC, AMP, CPD, CRO, CTX, NAL, T/S

bla CTX-M-1, bla TEM-1, qnrA, dfrA15, dfrA17

 Fresh poultry organs (liver)

Paratyphi A

AMC, AMP, CAZ CRO, CTX, T/S

bla CTX-M-14, bla TEM-1

 Frozen poultry meat

Paratyphi A

AMC, AMP, CRO, CTX, T/S

bla CTX-M-14, bla TEM-1

Beef

 Fresh beef meat

Typhimurium

AMP, CAZ, CTX

bla CTX-M-1

 Fresh beef meat

Typhimurium

AMP, CAZ, CRO, CTX

bla CTX-M-1

 Fresh beef meat

Typhimurium

AMC, CPD, CTX, TET, T/S

bla CTX-M-3, bla TEM-1

 Fresh beef meat

Enteritidis

AMP, CPD, CTX, NAL, STR, TET, T/S

bla CMY-2, bla CTX-M-1, bla TEM-1, qnrA, qnrB

 Fresh beef organs (spleen)

Typhimurium

AMP, CPD, CTX, STR,TET, T/S

bla CTX-M-14, bla TEM-1

 Fresh beef organs (liver)

Typhimurium

AMC, AMP, CPD

–

 Fresh beef organs (liver)

Paratyphi A

AMP, CPD, CTX

bla TEM1

 Frozen beef meat

Typhimurium

AMC, AMP, CAZ, CPD, CRO, CTX, ENR, NAL, STR, TET, T/S

bla CMY-2, bla CTX-M-1, bla TEM1, qnrA, qnrB, aadA2

  1. AMC amoxycillin–clavulanic acid, AMP ampicillin, CAZ ceftazidime, CPD cefpodoxime, CRO chloramphenicol, CTX cefotaxime, ENR enrofloxacin, NAL nalidixic acid, STR streptomycin, TET tetracycline, T/S trimethoprim/sulphamethoxazole