title: Patent Toxocara canis infection in ascarid-naive dogs.
abstract: The effect of feeding different numbers of Toxocara canis eggs on patent intestinal infections was studied in 45 ascarid-naive 62--64-day-old pups and 6 adult dogs. Twenty-four of 25 pups fed 10 to 1,000 eggs developed patent intestinal infections, whereas none of the 20 pups fed 10,000 eggs developed patent intestinal infection. Three of 6 presumably ascarid-naive dogs, 7, 10, and 52 months old fed 100 eggs each, developed intestinal infections.
mesh_terms: D000818:Animals; D001196:Ascariasis / Q000662:veterinary*; D004283:Dog Diseases / Q000469:parasitology*; D004285:Dogs; D005243:Feces / Q000469:parasitology; D005260:Female; D007422:Intestines / Q000469:parasitology; D008297:Male; D010270:Parasite Egg Count; D013997:Time Factors; D014120:Toxocariasis / Q000469:parasitology / Q000662:veterinary*