Page Banner

United States Department of Agriculture

Agricultural Research Service

Related Topics

Page 13
headline bar
1 - 2007 Veterinary Isolates Final Report- Accessible Version
2 - Page 3
3 - Page 4
4 - Page 12
5 - Page 13
6 - Page 5
7 - Page 6
8 - Page 7
9 - Page 8
10 - Page 9
11 - Page 10
12 - Page 11
13 - Page 1
 
 
Table 1. Number of E.coli Isolates Tested from Chickens, 2000-2007

2000

2001200220032004200520062007
Chickens

285

1989

2100

1365

1697

2232

1357

1510

 

 

Table 2. Distribution of MICs and Occurrence of Resistance among E.coli Isolates from Chickens, 2007
%I%R95% CI0.015

0.03

0.060.1250.250.512481632641282565121024
Amikacin

0

0

0.0-0.3

 

 

 

 

 

1.7

32.3

54.8

10.1

1.1

 

 

 

 

 

 

 

Gentamicin

6.7

38

35.6-40.5

 

 

 

 

9

37.5

5.8

1.1

1.9

6.7

16.9

21.1

 

 

 

 

 

Kanamycin

1.7

7.7

6.4-9.2

 

 

 

 

 

 

 

 

 

81.9

8.7

1.7

0.6

7.2

 

 

 

Streptomycin

N/A

47

44.5-49.6

 

 

 

 

 

 

 

 

 

 

 

53

24.2

22.8

 

 

 

Ampicillin

0.1

18.7

16.8-20.8

 

 

 

 

 

 

20.1

43

17.9

0.3

0.1

0.8

17.9

 

 

 

 

Amoxicillin-Clavulanic Acid

0.5

11.2

9.7-12.9

 

 

 

 

 

 

6

38.1

35.8

8.5

0.5

9.2

2

 

 

 

 

Ceftiofur

2.6

7

5.8-8.4

 

 

 

8.5

49.1

30

1.7

1

2.6

5.4

1.6

 

 

 

 

 

 

Ceftriaxone

2.6

0.1

0-0.5

 

 

 

 

88.1

0.5

0.7

0.3

2.1

5.6

2.5

0.1

0

0.1

 

 

 

Cefoxitin

1.9

10.3

8.8-12.0

 

 

 

 

 

0.1

2.4

25.1

46.9

13.4

1.9

6.5

3.8

 

 

 

 

Sulfonamides

N/A

53.2

50.6-55.7

 

 

 

 

 

 

 

 

 

 

42

4

0.1

0.2

0.4

53.2

 

Trimethoprim-Sulfamethoxazole

N/A

7.9

6.6-9.4

 

 

 

63.7

17.4

5.9

4

1.1

0.1

7.9

 

 

 

 

 

 

 

Chloramphenicol

0.6

2.3

1.6-3.2

 

 

 

 

 

 

 

14.6

61.5

21

0.6

0.2

2.1

 

 

 

 

Ciprofloxacin

0

0.1

0-0.5

90.6

5.1

0.2

2.1

1.7

0.3

0

0

0

0.1

 

 

 

 

 

 

 

Nalidixic Acid

N/A

4.2

3.3-5.4

 

 

 

 

 

2.5

26

55.4

11.5

0.3

0.1

0.9

3.3

 

 

 

 

Tetracycline

1.8

40.2

37.7-42.7

 

 

 

 

 

 

 

 

58

1.8

6

17.2

17

 

 

 

Table 2 notes:

95% confidence intervals for percent resistant (%R) were calculated using the Clopper-Pearson exact method

Antimicrobial subclasses and susceptible, intermediate and resistance breakpoints can be found in the antimicrobials and breakpoints section. 

N/A- Not applicable 

 

Table 3. Percent Antimicrobial Resistance among E.coli Isolates from Chickens by Year, 2000-2007

 

20002001200220032004200520062007
Amikacin

0

0

0

0

0

0

0

0

Gentamicin

40

33.4

38

38.8

39.1

36.7

33.1

38

Kanamycin

16.1

14.5

11.6

10.3

11.5

10.3

9.1

7.7

Streptomycin

77.5

65.8

65.1

64.2

64.1

58

49.5

47

Ampicillin

20

19.5

19

18.6

17.6

22

25.6

18.7

Amoxicillin-Clavulanic Acid

8.1

10

10.9

11.1

8.8

10.6

16

11.2

Ceftiofur

6.3

4.4

5.5

7.1

4.9

6.5

10.2

7

Ceftriaxone

0

0

0

0

0.1

0

0.1

0.1

Cephalothin

17.9

12.9

15.1

16.6

NT

NT

NT

NT

Cefoxitin

7.4

8.7

8.5

8.3

8.2

9.9

15

10.3

Sulfonamides

57.9

58.2

46.1

43.9

53.2

51.9

48.6

53.2

Trimethoprim-

17.2

12.6

10.4

10.5

10.7

10.4

8.4

7.9

Chloramphenicol

4.6

2.4

1.8

1.3

1

1

1.9

2.3

Ciprofloxacin

0

0.2

0

0.1

0.2

0.4

0

0.1

Nalidixic Acid

10.2

8.4

6.8

6.2

6.8

7.5

5.4

4.2

Tetracycline

68.4

61.6

58.6

52.2

50.3

48.9

1.3

40.2

Table 3 notes:

NT: Not tested

 

 

Table 4. Percent Frequency of Resistance Patterns of E.coli Isolates, by Year, 2000-2007

 

20002001200220032004200520062007
No Resistance detected

10.2

12.9

15.9

16

17

17.7

18.6

24.4

Resistance >1 CLSI subclass

89.8

87.1

84.1

84

83

82.3

81.4

75.6

Resistance >2 CLSI subclasses

76.8

21.7

68

65

66.5

64.7

62.9

60.8

Resistance >3 CLSI subclasses

55.1

34.2

43.3

38.9

42.3

41.1

42.9

36.1

Resistance >4 CLSI subclasses

18.9

7.9

13.8

13

11.5

14.7

16.6

12.6

Resistance >5 CLSI subclasses

7.7

4.1

6.6

6.4

4.8

6.8

7.3

6

Table 4 notes:

CLSI: Clinical and Laboratory Standards Institute M100 Document

 


<< Previous 1 2 3 4 [5] 6 7 8 9 10 11 12 13 Next >>
Last Modified: 8/13/2016
Footer Content Back to Top of Page