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Table 2 Distribution of different ratios of MPC to MIC for clinical isolates of R. anatipestifer

From: In vitro susceptibility of four antimicrobials against Riemerella anatipestifer isolates: a comparison of minimum inhibitory concentrations and mutant prevention concentrations for ceftiofur, cefquinome, florfenicol, and tilmicosin

Drug

No. of isolates having different ratios of MPC to MIC

1

2

4

8

16

32

64

128

256

512

>512

Ceftiofura

1

3

1

8

6

22

25

14

8

6

9

Cefquinomeb

0

0

0

3

5

9

5

11

25

22

23

Florfenicol c

6

25

30

18

12

5

2

0

0

0

0

Tilmicosin d

1

5

15

20

8

17

14

10

5

3

4

  1. a Testing against 103 isolates
  2. b Testing against 103 isolates
  3. c Testing against 98 isolates
  4. d Testing against 102 isolates