Geographic Distribution Worldwide, with infections more frequent in school- or preschool- children and in crowded conditions. Humans are considered to be the only hosts of E.(Adult females: 8 to 13 mm, adult male: 2 to 5 mm.).Causal Agent:Oxyuris vermicularis, also called human pinworm or seatworm.The drugs of choice for treatment of ascariasis are albendazole*, mebendazole, and pyrantel pamoate.Microscopic identification of eggs in the stool is the most common method for diagnosing intestinal ascariasis.High worm burdens may cause abdominal pain and intestinal obstruction. Adult worms : usually cause no acute symptoms. (Adult females: 20 to 35 cm adult male: 15 to 30 cm.)Ĭlinical Features Lung phase ( larval migration): - Loeffler’s syndrome).Causal Agent:Is the largest nematode (roundworm) parasitizing the human intestine.3- Animal Nematodes: which larve stage of them is infective for human.( contagious H.):Enterobius vermicularis,…

1- Soil transmitted Helminthes : Ascaris, Hook worms.

WHO Classified of Helminthes According to transmission methods

- Arthropoda 3- Nematomorpha 4- Acanthocephala 5- Annelida.

Download nematomorpha life cycle