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Table 4 Combinations of MLS resistance genes in 40 ER-R CoPSA and 65 ER-R CoNS isolates

From: Macrolide-lincosamide-streptogramin resistance phenotypes and genotypes of coagulase-positive Staphylococcus aureus and coagulase-negative staphylococcal isolates from bovine mastitis

Species

Total number

Erythromycin-resistant number

ermB + ermC

ermC + msrA/msrB

ermC + mphC

ermC+ msrA/msrB + mphC

n

iMLS

cMLS

MS

n

iMLS

cMSL

MS

n

iMLS

cMLS

MS

n

iMLS

cMLS

MS

S. chromogenes

11

6

1

1

  

1

1

  

1

1

      

S. sciuri

9

2

                

S. warneri

2

2

                

S. haemolyticus

31

30

11

5

6

 

19

12

7

 

12

8

4

 

11

5

6

 

S. epidermidis

7

6

1

 

1

 

4

3

1

 

1

1

  

1

1

  

S. hyicus

3

3

2

 

2

 

2

 

2

     

1

1

  

S. saprophyticus

1

1

    

1

  

1

1

  

1

1

  

1

S. simulans

5

4

    

1

 

1

 

1

 

1

 

1

 

1

 

CoN S. aureus a

28

11

2

2

  

8

7

 

1

5

4

 

1

3

2

 

1

Total CoNS

97

65

17

8

9

0

36

23

11

2

21

14

5

2

18

9

7

2

CoP S. aureus b

121

40

18

17

1

0

6

6

0

0

27

26

1

0

6

5

1

0

  1. iMLS, inducible expression of clindamycin resistance
  2. cMLS, constitutive expression of clindamycin resistance
  3. MS, erythromycin-resistant, clindamycin-susceptible, no induction
  4. CoN S. aureus a, coagulase-negative S. aureus
  5. CoP S. aureus b, coagulase-positive S. aureus
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BMC Veterinary Research

ISSN: 1746-6148

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