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Table 1 Bacterial strains used in this study and PCR-based replicon typing and resistance gene characterization for S. Heidelberg and E. coli blacmy-2 plasmids.

From: Genetic characterization of clinical and agri-food isolates of multi drug resistant Salmonella enterica serovar Heidelberg from Canada

Straina

Year

PTb

Provincec

Source

Resistance Phenotyped

Resistance Genotypee

blacmy-2 plasmid mediated resistance determinantse

Reph

01–7169

2001

29

ON

Human stool

Amp, Chl, Cro, Gen, Kan, Str, Sxt, Tio

aadA2, strA, sul1

n/a

n/a

02–0102

2001

11a

ON

Human stool

Chl, Str, Sul

aadA1, aadA2

n/a

n/a

02–2339fg

2002

19

ON

Human stool

Sensitive

n/a

n/a

n/a

02–4660fg

2002

19

ON

Human stool

Amc, Amp, Chl, Fox, Str, Sxt, Tet, Tio

blacmy-2, dhfrA1, floR, strA, sul1, tetA

blacmy-2, dhfRA1, floR, strA, sul1, tetA

A/C

02–5785f

2002

AT02–5785

ON

Human stool

Amc, Amp, Chl, Fox, Gen, Kan, Smx, Str, Tet, Tio

blacmy-2, floR, strA, sul1, tetA

n/i

n/a

02–5980

2002

29

QC

Human blood

Amc, Amp, Fox, Tio

bla cmy-2

bla cmy-2

I1

03–0262fg

2003

41

QC

Human blood

Amc, Amp, Fox, Cep, Cro, Tio

bla cmy-2

bla cmy-2

I1

03–0845f

2003

29

ON

Human stool

Amc, Amp, Fox, Cep, Chl, Gen, Kan, Smx, Str, Tet, Tio

aadB, blacmy-2, cmlA, strA, sul1, tetA

aadB, blacmy-2,cmlA, strA, sul1, tetA

A/C

03–3012

2003

4

QC

Human blood

Amc, Amp, Cep, Cro, Fox, Tio

bla cmy-2

blacmy-2

I1

03–4601

2003

AT03–4601

QC

Human blood

Amc, Amp, Cep, Chl, Cro, Fox, Tio, Smx, Str, Tet, Tio

blacmy-2, floR, strA, tetA

blacmy-2, floR, strA, tetA

A/C; I1

03–4690

2003

32

ON

Human stool

Amc, Amp, Cep, Cro, Fox, Gen, Str, Tet, Tio

blacmy-2, strA, tetB

bla cmy-2

I1

03–7402fg

2003

29

ON

Human blood

Amc, Amp, Cep, Cro, Fox, Tio

bla cmy-2

bla cmy-2

I1

04–0346fg

2004

54

QC

Human stool

Amc, Amp, Cep, Chl, Cro, Fox, Smx, Str, Tet, Tio

blacmy-2, floR, strA, tetA

blacmy-2, floR, tetA

A/C

04–1511

2004

41

ON

Human stool

Amc, Amp, Cep, Fox, Smx, Str, Tet, Tio

blacmy-2, strA, tetA

bla cmy-2

I1

04–3194

2004

29

ON

Human blood

Amc, Amp, Cro, Fox, Tio

bla cmy-2

bla cmy-2

I1

04–3293

2004

29a

QC

Human blood

Amc, Amp, Cro, Fox, Tio

bla cmy-2

bla cmy-2

I1

04–4717

2004

29

QC

Human blood

Amc, Amp, Cro, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–5435

2004

29

QC

Human blood

Amc, Amp, Cro, Fox, Tet, Tio

bla cmy-2

bla cmy-2

I1

04–5511fg

2004

41

ON

Human stool

Sensitive

n/a

n/a

n/a

05–4260

2001

29

ON

Bovine passive

Amc, Amp, Cep, Fox, Tio

n/d

n/a

n/a

05–4262fg

2001

Untypable

AB

Chicken passive

Amc, Amp, Cep, Chl, Fox, Gen, Kan, Smx, Str, Tet, Tio

blacmy-2, floR, strA, sul1, tetA

blacmy-2, floR, strA, sul1, tetA

A/C; I1

05–4263g

2001

Untypable

ON

Chicken passive

Amc, Amp, Cep, Fox, Tet, Tio

blacmy-2, tetB

bla cmy-2

I1

05–4264

2002

Atypical

ON

Bovine passive

Amc, Amp, Cep, Chl, Fox, Gen, Kan, Str, Sxt, Tet, Tio

aadA1, blacmy-2, dhfRA1, floR, strA, sul1, tetA

n/i

n/a

05–4269fg

2003

29

ON

Turkey passive

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4272

2003

29

QC

Chicken retail

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4275

2003

32

QC

Chicken retail

Amc, Amp, Cep, Fox, Gen, Str, Tet, Tio

blacmy-2, strA, tetB

bla cmy-2

I1

05–4277

2003

29

QC

Chicken retail

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4287

2003

29

ON

Chicken abattoir

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4294

2004

29

ON

Chicken retail

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4299

2004

29

ON

Chicken abattoir

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

Unknown

05–4316f

2004

29

PE

Bovine passive

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

05–4354fg

2004

41

QC

Porcine passive

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

Unknown

05–4355

2004

29

QC

Porcine passive

Amc, Amp, Cep, Fox, Tio

bla cmy-2

bla cmy-2

I1

00–5440

2000

29

AB

Human

Sensitive

n/a

n/a

n/a

05–1147

2005

29

QC

Human

Sensitive

n/a

n/a

n/a

539

unknown

n/d

ON

Chicken rinse

Sensitive

n/a

n/a

n/a

564

unknown

n/d

ON

Egg yolk mix

Sensitive

n/a

n/a

n/a

1170

unknown

n/d

ON

Cocoa beans

Sensitive

n/a

n/a

n/a

S-467

1948

n/d

BC

Human

Sensitive

n/a

n/a

n/a

E. coli 830

2004

n/d

AB

Chicken abattoir

Amc, Amp, Cep, Fox, Gen, Smx, Str, Tet, Tio

aadA1, blacmy-2, sul1

aadA1, bla cmy 2

Unknown

E. coli 831

2004

n/d

QC

Chicken abattoir

Amc, Amp, Chl, Fox, Kan, Smx, Str, Tet, Tio

aadA1, blacmy-2, floR, strA, sul1, tetA

aadA1, blacmy-2, floR, strA, tetA

A/C

E. coli 832

2004

n/d

QC

Porcine abattoir

Amc, Amp, Cep, Chl, Fox, Smx, Str, Tet, Tio

blacmy-2, floR, strA, tetA

blacmy-2, strA, tetA, floR

A/C

E. coli 833

2004

n/d

ON

Chicken abattoir

Amc, Amp, Cep, Fox, Gen, Smx, Str, Tio

aadA1, blacmy-2, floR, sul1

aadA1, bla cmy 2

I1

E. coli 834

2004

n/d

QC

Bovine retail

Amc, Amp, Cep, Fox, Tio

blacmy-2, blacmy-2

bla cmy 2

I1

  1. a All strains are S. Heidelberg unless identified otherwise
  2. b PT, phage type; n/d, not determined
  3. c AB, Alberta; BC, British Columbia; PE, Prince Edward Island; QC, Quebec; ON, Ontario
  4. d Amc, amoxicillin-clavulanic acid; Amp, ampicillin; Fox, cefoxitin; Tio, ceftiofur; Cro, cefriaxone; Cep, cephalothin; Chl, chloramphenicol; Gen, gentamycin; Kan, kanamycin; Nal, nalidixic acid; Str, streptomycin; Sul, sulfamethoxazole; Tet, tetracycline; Smx, sulfizoxazole; Sxt, trimethoprim-sulfamethoxazole. n/a, not applicable.
  5. e aadA1, streptomycin/spectinomycin adenyltransferase; aadB, aminoglycoside adenyltransferase; cmlA, chloramphenicol/florphenicol efflux; dhfR, dihydrofolate reductase; floR, efflux; strA, streptomycin phosphotransferase; sul1, dihydropteroate synthase; tetA, efflux; tetB, efflux; blacmy-2, beta-lactamase. n/a, not applicable; n/i, plasmid not isolated; n/d, not determined.
  6. f CGH were conducted on these isolates
  7. g DNA sequence-based typing was performed on these isolates
  8. h n/a, not applicable