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Table 2 Temporal and Geographic distribution of equine samples from Gauteng Province assessed for antimicrobial susceptibility, 2007–2012

From: An Exploratory Descriptive Study of Antimicrobial Resistance Patterns of Staphylococcus Spp. Isolated from Horses Presented at a Veterinary Teaching Hospital

 

All Samples Processed (n = 1027)

Staphylococcus positive samples (n = 123)

AMRc Isolates (n = 64)

MDRd Isolates (n = 35)

%b

95% CIa

%

95% CIa

%

95% CIa

%

95% CIa

Season

 Summer

40.8

37.8, 43.8

10.0

7.4, 13.3

64.3

48.6, 77.4

38.1

24.6, 53.8

 Autumn

18.6

16.3, 21.1

14.1

9.9, 19.9

29.6

15.2, 49.6

14.8

5.5, 34.2

 Winter

25.0

22.5, 27.8

12.1

8.6, 16.7

58.1

40.0, 74.2

41.9

25.8, 60.0

 Spring

15.6

13.5, 17.9

14.4

9.7, 20.7

47.8

28.3, 68.1

8.7

2.1, 29.9

Year

 2007

34.1

31.2, 37.0

7.7

5.3, 11.0

55.6

36.4, 73.2

14.8

5.5, 34.2

 2008

15.5

13.4, 17.8

8.2

4.8, 13.6

53.8

27.0, 78.6

15.4

3.6, 47.0

 2009

16.1

13.9, 18.4

12.1

7.9, 18.1

55.0

32.9, 75.3

35.0

17.2, 58.3

 2010

8.8

7.2, 10.7

13.3

7.7., 22.1

33.3

12.4, 63.9

8.3

1.0, 44.1

 2011

7.1

5.7, 8.9

6.8

2.9, 15.5

60.0

16.6, 91.9

20.0

2.1, 74.8

 2012

18.5

16.2, 21.0

24.2

18.6, 30.8

52.2

37.7, 66.3

43.5

29.8, 58.2

Municipality

 Johannesburg

20.0

17.6, 22.5

11.7

7.6, 16.9

54.2

34.0, 73.0

33.3

17.2, 54.5

 Tshwane

61.2

58.2, 64.2

11.6

9.2, 14.4

49.3

37.9, 60.8

26.0

16.5, 37.6

 Ekurhuleni

10.1

8.4, 12.1

10.6

5.4, 18.1

63.6

32.3, 86.5

36.4

13.5, 67.7

 Sedibeng

2.4

1.6, 3.6

20.0

6.8, 40.7

40.0

5.3, 85.3

20.0

0.5, 71.6

 West Rand

6.2

4.9, 7.9

10.0

7.8, 26.9

60.0

26.3,87.8

30.0

6.7, 65.2

  1. a95% confidence interval
  2. bPercent
  3. cAMR: Antimicrobial resistant (defined as resistance to at least one antimicrobial)
  4. dMDR: Multidrug resistant (defined as resistance to at least three classes of antimicrobials; includes a subset of AMR isolates)