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Table 2 Mean live Amblyomma americanum counts and efficacy relative to placebo at 12 hours after treatment and post-treatment re-infestations for dogs treated with oral sarolaner on Days 0, 30, and 60 or fluralaner once on Day 0

From: Comparative speed of kill of sarolaner (Simparica™ Chewables) and fluralaner (Bravecto®) against induced infestations of Amblyomma americanum on dogs

Treatment

 

Day of treatment or re-infestation

 

0

14

28

42

58

76

90

Placebo

Range

18–32

3–17

7–23

3–27

6–28

7–27

7–25

A. mean

24.1

10.5

15.1

14.3

18.4

14.5

17.3

G. mean1

23.8a

9.3a

13.9a

12.4a

17.2a

13.0a

16.4a

Sarolaner

Range

2–15

2–14

8–20

6–24

7–16

3–22

9–23

A. mean

7.3

7.8

11.9

12.6

11.3

11.9

13.9

Efficacy (%)

69.9

26.2

21.5

11.4

38.8

18.1

19.6

G. mean1

5.7c

6.7a,b

11.3a

11.5a

10.9a

9.8a

13.2a

Efficacy (%)

76.0

27.5

18.3

7.5

36.6

24.6

19.0

P-value vs placebo

< 0.0001

0.2624

0.4612

0.7786

0.0972

0.3085

0.4375

Fluralaner

Range

3–29

0–14

2–19

5–36

15–17

5–19

11–28

A. mean

13.5

5.1

10.5

21.3

15.8

12.0

16.4

Efficacy (%)

44.0

51.2

30.6

0.0

14.3

17.2

5.1

G. mean1

11.1b

3.6b

8.9a

19.1a

15.7a

11.0a

15.6a

Efficacy (%)

53.4

61.4

35.9

0.0

8.7

15.6

4.8

P-value vs placebo

0.0038

0.0012

0.0966

0.1010

0.7241

0.5211

0.8494

P-value vs sarolaner

0.0440

0.0750

0.4523

0.1060

0.2476

0.7240

0.6037

  1. 1Geometric means within columns with the same superscript are not significantly different (P > 0.05)