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Table 1 Prevalence of intestinal parasites (%) in fecal samples from shelter dogs and cats by age group

From: Parasite prevalence in fecal samples from shelter dogs and cats across the Canadian provinces

Parasite All Dogs (n = 1086) a All Cats (n = 636) a Dogs ≤ 1 yr (n = 546) Cats ≤ 1 yr (n = 328) Dogs >1 yr (n = 539) Cats >1 yr (n = 306)
  Prevalence (95% CI) Prevalence (95% CI) Prevalence (95% CI) Prevalence (95% CI) Prevalence (95% CI) Prevalence (95% CI)
Toxocara canis 12.7 (10.8-14.8) n/a 20.9 (17.5-24.5) n/a 4.5 (2.9-6.6) n/a
Toxocara cati n/a 16.5 (13.7-19.6) n/a 23.5 (19.0-28.4) n/a 8.8 (5.9-12.6)
Toxascaris leonina 3.0 (2.1-4.2) n/a 4.6 (3.0-6.7) n/a 1.5 (0.6-2.9) n/a
Ancylostoma caninum 3.1 (2.2-4.3) n/a 3.3 (2.0-5.2) n/a 3.0 (1.7-4.8) n/a
Uncinaria stenocephala 2.9 (2.0-4.1) n/a 4.0 (2.5-6.0) n/a 1.9 (0.9-3.4) n/a
Ancylostoma tubaeforme n/a 2.0 (1.1-3.5) n/a 2.1 (0.9-4.3) n/a 2.0 (0.7-4.2)
Taeniidb 1.6 (0.9-2.5) 4.4 (2.9-6.3) 1.1 (0.4-2.4) 2.7 (1.3-5.1) 2.0 (1.0-3.6) 5.9 (3.5-9.1)
Trichuris vulpis 4.4 (3.3-5.8) n/a 4.2 (2.7-6.3) n/a 4.6 (3.0-6.8) n/a
Capillarid eggs 0.7 (0.3-1.4) 2.5 (1.4-4.1) 1.1 (0.4-2.4) 1.2 (0.3-3.1) 0.4 (0.0-1.3) 3.9 (2.0-6.7)
Cystoisospora 10.4 (8.7-12.4) 14.0 (11.4-16.9) 12.6 (10.0-15.7) 16.8 (12.9-21.3) 8.2 (6.0-10.8) 11.1 (7.8-15.2)
Giardia 3.5 (2.5-4.8) 1.4 (0.6-2.7) 5.5 (3.7-7.8) 2.1 (0.9-4.3) 1.5 (0.6-2.9) 0.7 (0.1-2.3)
Cryptosporidium 3.0 (2.1-4.2) 1.3 (0.5-2.5) 4.9 (3.3-7.1) 2.1 (0.9-4.3) 1.1 (0.4-2.4) 0.3 (0.0-1.8)
Sarcocystis 4.5 (3.4-5.9) 0.2 (0.0-0.9) 4.4 (2.8-6.5) 0.0 (0.0-1.1) 4.6 (3.0-6.8) 0.3 (0.0-1.8)
All parasitesa 33.9 (31.1-36.8) 31.8 (28.2-35.5) 43.8 (39.6-48.1) 39.0 (33.7-44.5) 23.9 (20.4-27.8) 23.9 (19.2-29.0)
  1. aAll parasites include many cases of multiple infections. btaeniid-type eggs are produced by Taenia and Echinococcus cestode species, and cannot be identified to genus level by morphology alone.
  2. n/a: Species not an usual host or parasite not identified in the species.