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Elaeophora schneideri (arterial worm; carotid worm; cause of elaeophorosis, aka "filarial dermatitis" or "sorehead" in sheep; or "clear-eyed" blindness in elk) is a nematode which infests several mammalian hosts in North America. It is transmitted by horse-flies.
Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
The pinworm (species Enterobius vermicularis), also known as threadworm (in the United Kingdom, Australia and New Zealand) or seatworm, is a parasitic worm.It is a nematode (roundworm) and a common intestinal parasite or helminth, especially in humans. [7]
Pinworm infection occurs worldwide, [10] and is the most common helminth (i.e., parasitic worm) infection in the United States and Western Europe. [18] In the United States, a study by the Center of Disease Control reported an overall incidence rate of 11.4% among people of all ages. [ 18 ]
In the human host, Loa loa larvae migrate to the subcutaneous tissue, where they mature to adult worms in approximately one year, but sometimes up to four years. Adult worms migrate in the subcutaneous tissues at a speed less than 1 cm/min, mating and producing more microfilariae. The adult worms can live up to 17 years in the human host. [5]
These worms occupy the lymphatic system, including the lymph nodes; in chronic cases, these worms can lead to the syndrome of elephantiasis. Loiasis a subcutaneous filariasis is caused by Loa loa (the eye worm). Mansonella streptocerca, and Onchocerca volvulus. These worms occupy the layer just under the skin. O. volvulus causes river blindness.
The common slow-worm (Anguis fragilis) is a species of legless lizard native to western Eurasia. It is also called a deaf adder, blindworm, or regionally, a long-cripple, steelworm, and hazelworm. The "blind" in blind-worm refers to the lizard's small eyes, similar to a blindsnake (although the slow-worm's
Eggs of different species of parasitic worm. Parasitic worms, also known as helminths, [1] are a polyphyletic group of large macroparasites; adults can generally be seen with the naked eye. Many are intestinal worms that are soil-transmitted and infect the gastrointestinal tract. Other parasitic worms such as schistosomes reside in blood vessels.