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(Trichocephalus trichiurus), a parasitic round-worm, with a gray or reddish body. It is threadlike toward the front, and toward the back it is thickened and, in the male, curled up in a spiral. The length of the male is from 30 to 40 mm and that of the female is from 35 to 50 mm. The whipworm lives parasitically in the human intestines (in the blind gut and, less frequently, in the large intestine, the vermiform appendix, or the rectum). It attaches itself to the wall of the intestine by penetrating the mucous membrane with its thin front end and causes the disease trichuriasis. The whipworm develops without an intermediary host. Outside of the human body the larva develops over a period ranging from 11 to 120 days (depending on the temperature) inside an egg that is lemon-shaped and has plugs at both poles. When the egg lands in the intestines, the larva comes out of the egg and attaches itself to the wall of the intestine.


Pod’iapol’skaia, V. P., and V. F. Kapustin. Glistnye bolezni cheloveka, 3rd ed. Moscow, 1958.


References in periodicals archive ?
The corresponding standardized prevalences of roundwonn, whipworm, and hookworm infections among males and females showed a decreasing trend similar to that for the total STHs.
Washington, June 16 ( ANI ): A new study has found vital biological and genetic information from sequence of genomes of the whipworm, an intestinal parasitic worm that infects many people in the developing countries.
Hookworms, on the other hand, are slightly smaller than whipworms.
The samples revealed 118 'lemon-shaped' Trichuris trichiura eggs -- a type of roundworm commonly called the whipworm -- as well as 1,179 Ascaris lumbricoides, or giant roundworm, eggs.
Dunn describes a study done in 1999, when the bowels of 25 patients seriously ill with severe Crohn's disease were repopulated with whipworms.
18) They resemble the eggs of most other whipworms and could be misidentified.
Hookworms, roundworms, tapeworms, and whipworms can be present in pets and call for deworming to be done at least every three months, he added.
Tapeworms, roundworms, whipworms and hook-worms can all be treated, more than any other over-the-counter product--and for dogs that spend hours outdoors, deworming is an especially critical health treatment.
Health: Scans and other studies reveal hardened arteries, gallstones, arthritic knees (possibly related to Lyme disease), intestinal parasites called whipworms and fleas.
present a text that addresses both canine and feline infectious diseases and parasite-related disorders common in North America, in bullet format and alphabetical order from amebiasis to whipworms.
Obtained this summer from a shelter, Butch had heartworm disease and whipworms, an intestinal parasite.