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Table 1 Antibiotic sensitivity testing of urinary isolates of E. coli in the clinical laboratory using VITEK-2 AST-N280 cards

From: Characterization of blaCTX-M sequences of Indian origin and thirteen uropathogenic Escherichia coli isolates resistant to multiple antibiotics

Designation of the isolate

Cefazolin

Ceftriaxone

Cefepime

Ertapenem

Imipenem

Meropenem

Amikacin

Ciprofloxacin

Nitrofurantoin

MIC

INT

MIC

INT

MIC

INT

MIC

INT

MIC

INT

MIC

INT

MIC

INT

MIC

INT

MIC

INT

P8

≥ 64

R

≥ 64

R

16

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

≤ 2

S

≥ 4

R

64

I

P12

≥ 64

R

≥ 64

R

2

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

≤ 2

S

≥ 4

R

128

R

P19

≥ 64

R

≥ 64

R

32

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

8

S

≥ 4

R

≤ 16

S

P20

≥ 64

R

≥ 64

R

8

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

64

I

P28A

≥ 64

R

≥ 64

R

8

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

128

R

P45

≥ 64

R

≥ 64

R

32

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

8

S

≥ 4

R

64

I

Q41A

≥ 64

R

≥ 64

R

32

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

64

I

Q42B

≥ 64

R

≥ 64

R

8

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

≤ 16

S

Q57

≥ 64

R

16

R

4

R

4

I

≤ 1

S

≤ 0.25

S

≤ 2

S

≤ 0.25

S

≥ 512

R

Q66

≥ 64

R

≥ 64

R

8

R

≥ 64

R

≤ 1

S

≤ 0.25

S

8

S

≥ 4

R

≤ 16

S

Q72

≥ 64

R

≥ 64

R

≥ 64

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

4

S

2

I

32

S

Q76A

NT

NT

≥ 64

R

32

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

64

I

Q76B

NT

NT 

≥ 64

R

16

R

≤ 0.5

S

≤ 1

S

≤ 0.25

S

16

S

≥ 4

R

64

I

  1. MIC minimum inhibitory concentration (µg/ml), INT interpretation, R resistant, S sensitive, I intermediate, NT not tested