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Table 6 Detected proportion of intestinal parasites by owner-reported time of last anthelmintic administration

From: Detection of Giardia and helminths in Western Europe at local K9 (canine) sites (DOGWALKS Study)

Medication frequency (number of samples)

Giardia/nematode

Nematodea

Hookworm

Whipworm

Ascarid

Giardia

 ≤ 1 month (n = 315)

78 (24.8)

15 (4.8)

7 (2.2)

2 (0.6)

7 (2.2)

64 (20.3)

95% CI: 20.1‒29.9

95% CI: 2.7‒7.7

95% CI: 0.9‒4.5

95% CI: 0.1‒2.3

95% CI: 0.9‒4.5

95% CI: 16.0‒25.2

 > 1 to 3 months (n = 633)

150 (23.7)

42 (6.6)

16 (2.5)

14 (2.2)

22 (3.5)

121 (19.1)

95% CI: 20.4‒27.2

95% CI: 4.8‒8.9

95% CI: 1.5‒4.1

95% CI: 1.2‒3.7

95% CI: 2.2‒5.2

95% CI: 16.1‒22.4

4 to 6 months (n = 389)

116 (29.8)

44 (11.3)

19 (4.9)

15 (3.9)

16 (4.1)

85 (21.9)

95% CI: 25.3‒34.6

95% CI: 8.3‒14.9

95% CI: 3.0‒7.5

95% CI: 2.2‒6.3

95% CI: 2.4‒6.6

95% CI: 17.8‒26.3

7 to 12 months (n = 208)

49 (23.6)

22 (10.6)

10 (4.8)

6 (2.9)

12 (5.8)

33 (15.9)

95% CI: 18.0 ‒ 29.9

95% CI: 6.7‒15.6

95% CI: 2.3‒8.7

95% CI: 1.1‒6.2

95% CI: 3.0‒9.9

95% CI: 11.2‒21.6

 > 12 months (n = 264)

43 (16.3)

22 (8.3)

10 (3.8)

6 (2.3)

13 (4.9)

27 (10.2)

95% CI: 12.0‒21.3

95% CI: 5.3‒12.3

95% CI: 1.8‒6.9

95% CI: 0.8‒4.9

95% CI: 2.6‒8.3

95% CI: 6.8‒14.5

Don’t remember (n = 97)

11 (11.3)

3 (3.1)

2 (2.1)

0 (0.0)

1 (1.0)

8 (8.2)

95% CI: 5.8‒19.4

95% CI: 0.6‒8.8

95% CI: 0.3‒7.3

95% CI: 0.0‒3.7

95% CI: 0.0‒5.6

95% CI: 3.6‒15.6

  1. Values in table are presented as the number, the percentage (in parentheses) and the confidence interval (CI)
  2. aPrimary nematode is ≥ 1 of hookworm, whipworm or ascarid detected