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Table 6 Prevalence of spa types and virulence genes among 124 S. aureus isolates from bulk tank milk of 189 U.S. dairy farms

From: Prevalence, antibiotic resistance, virulence and genetic diversity of Staphylococcus aureus isolated from bulk tank milk samples of U.S. dairy herds

Spa types

N

Proteases

Hemolysins

Leukocidin

Superantigenic toxins

Others

aur

SplA

Spl

B

Spl

E

hlgA

hlgB

hlgC

hlb

D

E

tst

b

c

d

g

h

i

k

l

m

n

o

q

u

sak

scn

t126

1

1

1

1

1

1

1

1

1

1

1

    

1

 

1

  

1

1

1

 

1

  

t127

1

1

1

1

1

1

1

1

1

1

1

     

1

          

t193

1

1

   

1

1

1

1

   

1

  

1

 

1

  

1

1

1

 

1

  

t224

3

3

3

3

2

3

3

3

3

3

3

                

t267

7

7

7

7

4

7

7

7

7

7

7

                

t359

16

16

16

16

5

16

16

16

16

16

16

                

t521

1

1

1

1

 

1

1

1

1

1

1

                

t527

1

1

1

1

1

1

1

1

1

1

1

                

t529

35

35

33

20

 

34

35

35

35

33

33

13

 

17

3

34

 

34

 

17

34

32

34

 

24

  

t543

5

5

5

5

 

5

5

5

5

4

5

   

4

5

 

5

   

4

  

3

  

t693

1

1

1

1

 

1

1

1

1

1

1

                

t1106

6

6

  

6

6

6

6

6

6

6

      

2

  

6

6

  

1

  

t1182

19

19

19

19

9

19

19

19

19

19

19

                

t2734

2

2

2

2

2

2

2

2

2

2

2

                

t3124

4

4

4

4

 

4

4

4

4

4

4

                

t3992

3

3

3

3

 

3

3

3

3

3

3

                

t10187

1

1

   

1

1

1

1

   

1

     

1

    

1

 

1

1

t10926

1

1

1

1

1

1

1

1

1

1

1

                

NT

16

16

12

12

9

16

16

15

15

14

14

   

1

  

1

  

2

3

1

 

2

  

Total

124

124

110

97

41

123

124

123

123

117

119

13

2

17

8

41

1

44

1

17

44

47

37

1

32

1

1

  1. NT = Not Typeable
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BMC Genomics

ISSN: 1471-2164

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