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Prevalence of Toxocara spp. and other parasites in dogs and cats in Halifax, Nova Scotia.

Several cases of visceral larva migrans syndrome in children led to an investigation of the ova of Toxocara spp. and other species in stool specimens from stray dogs and cats in Halifax, Nova Scotia. Fecal samples from 474 stray dogs and 299 stray cats were examined. Ova of Toxocara canis or cati were present in stools from 26.6% of the dogs and 25.1% of the cats. In dogs the prevalence of Toxocara canis was noticeably greater in puppies (56.1%) than in mature animals (11.9%).