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Table 3 Distribution of bacterial species isolated from clinical and subclinical mastitis samples in 2007-2009

From: Udder pathogens and their resistance to antimicrobial agents in dairy cows in Estonia

 

Clinical mastitis

Subclinical mastitis

Bacteria

2007

(n = 598)

2008

(n = 692)

2009

(n = 726)

2007

(n = 939)

2008

(n = 1063)

2009

(n = 661)

S. aureus

11.7

11.7

11.7

19.2

22.8

16.6

CNS

4.8

7.1

8.5

16.1

13.6

17.4

CPS*

3.8

3.3

1.6

4.6

2.8

5.1

Str. agalactiae

9.0

11.3

14.7

13.6

9.0

10.7

Str. dysgalactiae

8.0

7.8

7.2

3.6

4.0

5.6

Str. uberis

16.1

21.8

17.1

10.2

12.3

12.9

Str. spp

3.2

3.3

1.9

1.2

2.0

2.7

Lactococcus lactis

10.9

3.9

5.7

8.9

8.2

3.9

E. coli

14.4

16.6

16.5

1.6

2.0

3.8

Klebsiella spp.

7.0

1.3

2.3

0.7

0.6

0.9

Enterococcus spp.

1.3

2.3

1.1

1.5

2.8

4.2

Corynebacterium spp.

2.2

2.6

5.0

16.5

17.3

8.5

A. pyogenes

2.2

3.8

3.6

0.1

0.6

0.6

Pseudomonas spp.

1

0.3

0.3

0

0

0.6

Proteus spp.

0.2

0

0.2

0.4

0.1

0.6

Yeast

2.3

2

1.6

1.5

1.6

5.6

Other

1.8

0.9

1

0.3

0.3

0.3

Total

100%

100%

100%

100%

100%

100%

  1. * CPS: coagulase-positive staphylococci (other than S. aureus)