Guide to Preventing Parasites.pdf - Royal Canin Canada

Table 2. Canadian studies of the prevalence of parasites in dogs
Region Prevalence (%) Reference
T.
canis
T.
leonina
Hookworm Trichuris n
Newfoundland 40 200 Mikhael et al., 1974
Nova Scotia 18 385 Mikhael et al., 1974
26.6 1.3 8 1.3 474 Malloy et al., 1974
12.7 0.6 181 Guallazi et al., 1986
N.-Brunswick 20 204 Mikhael et al., 1974
Québec 35 211 Mikhael et al., 1974
52.6 10.5 9.47 8.42 155 Choquette et Gélinas,
1950
43.5 12.5 4.6 239 Seah et al., 1975
34 11.4 2.5 1.2 332 Ghadirian et al., 1976
44 80 Desrochers et Curtis,
1987
Ontario 88 1000 Mikhael et al., 1974
24.1 6.8 10.3 7.4 1359 Yang et al., 1979
Manitoba 8-10 ? Mikhael et al., 1974
Saskatchewan 15 ? Mikhael et al., 1974
1.92 9.3 0.32 623 Anvik et al., 1974
Alberta 10 ? Mikhael et al., 1974
Nunavut 2.1 16.5 0 0.9 959 Unruh et al., 1973
Table 3. Summary of prevalence rates observed in dogs in Canada
Species Prevalence (%) Number of dogs Number of studies
Min-max Mean
Toxocara canis 1.92-88 30.8 6 322 13
Hookworm 0.32-12.5 7.25 3 363 7
Trichuris vulpis 0.6-8,4 3.8 3 699 7
T. leonina 1.3-44 10.1 3 982 7
Numerous prevalence studies worldwide have been published. Researchers have
compiled 54 studies covering some 42,000 dogs and obtained a mean of 15,2% of dogs
excreting Toxocara eggs, although the range was 0 to 93% (Glickman and Schantz,
1981). However, recent reports from university laboratories show a sharp decrease in
these figures.
Table 4. Parasite prevalence in samples submitted to American university
laboratories
Reference Prevalence (%) Year
7