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Table 2 Median minimum inhibitory concentrations (MICs) of ciprofloxacin for the 53 Enterobacteriaceae isolates and the presence of qnrS gene in the isolates

From: Contribution of target alteration, protection and efflux pump in achieving high ciprofloxacin resistance in Enterobacteriaceae

Isolates

Source

ID

qnrS

MIC (μg/mL)

Escherichia spp.

UTI

E8, E23, E34

+

512

E29, E42

+

32

E36, E37, E40

128

E41, G3

+

128

E56

+

8

E58

+

4

G2

+

128

G4

+

256

DMCH

28N

+

256

26N

+

512

SSMCH

CR1, CR2, CR4

+

512

CR6

+

64

NCX9, MCX14

+

256

C6, C84

64

C79

32

C49

512

Klebsiella spp.

SSMCH

NCX6, MCX10

+

512

 

E33

+

256

 

C1

128

 

C67

512

Enterobacter spp.

SSMCH

MCX4

+

4

 

MCX5

+

512

 

MCX2

+

32

 

MCX3

+

8

 

MCX1, MCX6, NCX4

+

256

Salmonella spp.

Poultry

36, 44, 45, 49, 54, 81, 84, 94, 60

16

58, 68

32

74

+

256

77

+

512

18

64

20

128

  1. Italics isolates were selected for revealing CIP resistance mechanisms