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Table 1 Results of the in vitro antimicrobial susceptibility testing

From: Camel Streptococcus agalactiae populations are associated with specific disease complexes and acquired the tetracycline resistance gene tetM via a Tn916-like element

 

0.008

0.015

0.03

0.06

0.12

0.25

0.5

1

2

4

8

16

32

64

128

ECOFF

CLSI CBP

MIC90

 

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

mg/L

 

(mg/L)

(mg/L)

AMC

   

2

43

44

    

1

    

ND

≥ 32/16

0.25

AMP

   

1

20

68

 

1

       

≤ 0.25

≥ 8

0.25

CEF

    

1

53

35

  

1

     

ND

≥ 32

0.5

CFP

    

1

44

44

 

1

      

≤ 0.125

ND

0.5

CFQ

  

1

24

65

          

ND

ND

0.12

CHL

       

2

83

4

1

    

ND

≥16

2

CLI

  

10

80

           

≤0.5

ND

0.06

CTX

  

1

52

35

1

 

1

       

≤ 0.125

ND

0.12

ENR

  

1

   

5

75

8

      

ND

ND

1

ERY

 

2

14

74

           

≤ 0.25

≥ 1

0.06

GEN

      

1

   

1

15

71

2

 

ND

≥ 16

32

OXA

 

1

   

4

85

        

ND

ND

0.5

PEN

 

1

 

39

48

 

1

 

1

      

ND

≥4

0.12

PIRL

   

3

80

7

         

ND

≥4

0.12

Q-D

    

1

6

83

        

ND

ND

0.5

SPI

   

1

 

84

4

        

ND

ND

0.25

SXT

  

28

57

3

1

         

ND

≥ 76

0.06

TET

     

26

31

1

    

12

19

 

≤ 1.0

≥ 8

64

TIL

     

2

1

 

4

83

     

ND

ND

4

TUL

    

1

1

78

10

       

ND

ND

1

TYL

    

1

3

56

30

       

ND

ND

1

VAN

      

82

8

       

≤1.0

ND

0.5

XNL

   

1

5

83

 

1

       

ND

≥ 8

0.25

  1. ECOFF-epidemiological cut-off value (retrieved from the European Committee on Antimicrobial Susceptability Testing), CLSI CBP-CLSI M31-A3 veterinary clinical breakpoint for resistance, MIC90-Minimum Inhibitory Concentration required to inhibit the growth of 90% of organisms, ND-not determined, GBS-Group B Streptococcus agalactiae, AMC-Amoxicillin-clavulanic acid (2:1 ratio), AMP-Ampicillin, CEF – Cephalothin, CFP - Cefoperazone, CFQ – Cefquinome, CHL – Chloramphenicol, CLI – Clindamycin, CTX – Cefotaxime, ENR – Enrofloxacin, ERY – Erythromycin, GEN – Gentamicin, OXA – Oxacillin + 2% NaCl, PEN – Penicillin, PIRL – Pirlimycin, Q-D - Quinupristin/Dalfopristin, SPI – Spiramycin, SXT - Trimethoprim/Sulfamethoxazole, TET – Tetracycline, TIL – Tilmicosin, TUL – Tulathromycin, TYL – Tylosin, VAN – Vancomycin, XNL – Ceftiofur.
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Veterinary Research

ISSN: 1297-9716