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Table 1 MIC distribution of E.coli isolates from 2006 to 2017 and frequency of resistant isolates

From: Phenotypic antimicrobial resistance in Escherichia coli strains isolated from swine husbandries in North Western Germany – temporal patterns in samples from laboratory practice from 2006 to 2017

Agent

n

Percentage of isolates with MIC-values (mg/l) of…

MIC50

MIC90

Clinical cut-off

Epidemiological cut-off

S

I

R

S

I

R

0.016

0.026

0.031

0.053

0.063

0.105

0.125

0.25

0.5

1

2

4

8

16

32

64

128

256

%

%

%

%

%

%

Ampicillin

3054

.

.

.

.

.

.

.

.

0.1

1.7

12.8

9.8

1.2

0.3

0.5

73.6

.

.

64.00

64.00

25.61

0.26

74.13

25.61

.

74.39

Apramycin

2969

.

.

.

.

.

.

.

.

.

.

.

93.3

.

1.8

0.5

4.4

.

.

4.00

4.00

95.05

.

4.95

.

.

.

Cefquinome

2969

.

.

.

.

.

.

.

.

96.0

.

0.3

0.4

0.7

2.6

.

.

.

.

0.50

0.50

96.36

0.40

3.23

.

.

.

Ceftiofur

3054

.

.

.

.

.

.

.

2.0

93.6

.

0.4

0.3

0.2

3.4

.

.

.

.

0.50

0.50

96.07

0.26

3.67

95.65

.

4.35

Cephalothin

3054

.

.

.

.

.

.

.

.

.

.

10.2

0.2

46.5

32.9

5.0

5.1

.

.

8.00

32.00

56.91

32.94

10.15

94.89

.

5.11

Colistin

3053

.

.

.

.

.

.

.

81.2

.

7.1

1.1

3.2

7.5

.

.

.

.

.

0.25

4.00

81.17

8.16

10.68

89.32

.

10.68

Enrofloxacin

3054

2.1

.

78.7

.

0.2

.

2.0

5.6

7.2

1.2

0.7

2.40

.

.

.

.

.

.

0.03

0.5

88.51

8.48

3.01

82.91

.

17.09

Florfenicol

3054

.

.

.

.

.

.

.

.

0.8

.

7.1

54.5

32.4

5.2

.

.

.

.

4.00

8.00

62.41

32.42

5.17

100.00

.

.

Gentamicin

3054

.

.

.

.

.

.

0.3

.

1.7

90.3

.

1.7

1.6

2.3

2.1

.

.

.

1.00

1.00

93.98

1.64

4.39

92.31

.

7.69

Neomycin

2969

.

.

.

.

.

.

.

.

.

.

.

84.2

.

1.4

4.7

9.7

.

.

4.00

32.00

84.20

1.38

14.42

84.20

.

15.80

Spectinomycin

3054

.

.

.

.

.

.

.

.

.

.

.

1.7

.

34.4

21.5

12.0

10.3

20.0

32.00

256.00

57.63

12.05

30.32

69.68

.

30.32

Tetracycline

3054

.

.

.

.

.

.

.

0.1

3.8

1.4

15.1

1.6

0.4

2.1

75.7

.

.

.

32.00

32.00

21.87

0.39

77.73

22.27

.

77.73