Table 2 Characterization of the 41 β-lactam resistant E. coli isolated from bulk tank milk of three dairy companies

MI-001–1

A

A1

blaOXA-1

—

—

CF

fimH

MI-006–2

A

A1

blaOXA-1

—

—

CF

fimH

MI-010–2

A

A1

blaOXA-1

—

—

—

eaeA, fimH

MI-015–2

A

A1

blaOXA-1

—

—

CL

fimH

MI-018–1

A

A1

blaTEM-1, blaOXA-1

—

—

AM

eaeA

MI-025–1

A

A1

blaOXA-1

—

Class 1

CF, CL

fimH

MI-025–2

A

A1

blaOXA-1

—

Class 1

CF

fimH

MI-026–1

A

A1

blaOXA-1

—

Class 1

CF

fimH

MI-027–2

A

A1

blaOXA-1

—

Class 1

CF, CL

fimH, iucC, iutA

MI-030–1

A

A1

blaOXA-1

—

—

CDX, CF, CZ, CXM,CTX,FEP, AM

fimH

MI-036–2

A

A1

blaOXA-1

—

—

CF

fimH

MI-040–1

A

A1

blaOXA-1

—

Class 1

CF

fyuA,iucC,

MI-041–1

A

A1

blaOXA-1

aac(6′)-Ib, aac(3)-II, aph(3′′)-Ib

Class 1 (dfrA12, aadA2)

CF, AM, AMC, GM, SXT

eaeA, escV, fimH, iucC, iutA, stx1

VL-002–1

B

B1

blaTEM-1, blaOXA-1

—

—

CZ, AM, AMC, C, TE

fimH

VL-002–2

B

B1

blaTEM-1, blaOXA-1

—

Class 1

AM, C

fimH

VL-054–1

B

B1

blaOXA-1

—

—

CF

iucC

VL-068–1

B

B1

blaTEM-1, blaOXA-1

aac(6′)-Ib, aac(3)-II, aph(3′′)-Ib

Class 1 (dfrA17, aadA5)

AM, C, GM, SXT, TE

—

VL-085–1

B

B1

blaOXA-1

—

Class 1

CF

fimH

VL-107–1

B

B1

blaTEM-1, blaOXA-1

aac(6′)-Ib, aac(3)-II, aph(3′′)-Ib

Class 1 (aadA4)

CF, CZ, AM, C, GM, SXT, TE

iucC

VL-107–2

B

B1

blaTEM-1, blaOXA-1

aac(6′)-Ib, aac(3)-II, aph(3′′)-Ib

Class 1 (aadA4)

CZ, AM, C, GM, SXT, TE

—

VL-108–1

B

B1

blaOXA-1

—

—

CF, TE

fimH

VL-110–1

B

B1

blaOXA-1

—

Class 1

CZ, CF, TE

fimH, fyuA, iucC

VL-115–1

B

B1

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

Class 1 (dfrA12, aadA2)

AM, GM, SXT

eaeA, fimH

KNU-008–2

C

C1

blaOXA-1

—

Class1 (aacA4)

CF, C

eaeA

KNU-019–2

C

C1

blaOXA-1

—

Class1

CF

fimH

KNU-029–1

C

C1

blaOXA-1

—

—

CF, CL

fimH,iucC

KNU-043–1

C

C1

blaOXA-1

—

Class1

CF

—

KNU-045–1

C

C1

blaOXA-1

—

—

CF

fimH

KNU-045–2

C

C1

blaOXA-1

—

—

CF, CAZ

fimH, iucC

KNU-061–1

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

Class1

AM, GM, TE

eaeA, fimH

KNU-071–1

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

Class1

AM, GM, TE

eaeA, fimH

KNU-075–2

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

eaeA, fimH

KNU-078–1

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

eaeA, fimH

KNU-084–2

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, AMC, GM

eaeA, fimH

KNU-089–1

C

C2

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM

eaeA, fimH

KNU-093–2

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

fimH

KNU-095–1

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

fimH

KNU-098–1

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

Class1

AM, GM, TE

fimH

KNU-114–1

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

fimH

KNU-118–1

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

—

AM, GM, TE

fimH

KNU-119–1

C

C3

blaTEM-1, blaOXA-1

aac(3)-II, aph(3′′)-Ib

Class1

AM, GM, TE

—