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Ascaris is a genus of parasitic nematode worms. The nematodes or roundworms ( Phylum Nematoda from Greek (nema "thread" + -ode "like" are one of the most common Secernentea are a class of Nematodes characterised by numerous Caudal papillae and an Excretory system possessing lateral canals The order Ascaridida includes several families of Parasitic Roundworms with three "lips" on the anterior end Ascarididae is a family of large intestinal roundworms infecting also humans Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for Ascaris lumbricoides is the member of the Ascaris family responsible for the disease Ascariasis. Ascaris suum is a parasitic Nematode that causes Ascariasis in Pigs Ascaris suum (Large Roundworm Common Parasitism is a type of symbiotic relationship between Organisms of different Species. The nematodes or roundworms ( Phylum Nematoda from Greek (nema "thread" + -ode "like" are one of the most common One species, A. suum, typically infects pigs, while another, A. lumbricoides, affects human populations, typically in sub-tropical and tropical areas with poor sanitation. Ascaris suum is a parasitic Nematode that causes Ascariasis in Pigs Ascaris suum (Large Roundworm Common Pigs, also called hogs or' swine', are Ungulates which have been domesticated as sources of food leather and similar products since ancient times Ascaris lumbricoides is the member of the Ascaris family responsible for the disease Ascariasis. A. lumbricoides is the largest intestinal roundworm and is the most common helminth infection of humans worldwide, an infection known as ascariasis. Ascariasis is a Human Disease caused by the parasitic Roundworm Ascaris lumbricoides.
Life cycle
Adult A. lumbricoides and A. suum live in the small intestine. In Biology the small Intestine is the part of the Gastrointestinal tract (gut between the Stomach and the Large intestine, and comprises A female A. lumbricoides can produce up to 200,000 eggs a day, though the number of eggs produced per female worm is lower when there are large number of worms present in the gut, a phenomenon called density dependent fecundity. When an egg is passed into the environment it develops into a third stage larva in about 10 days, the rate depending on the temperature and relative humidity. This typically takes place on the soil, which is why A. lumbricoides is classified with Trichuris trichiura and the hookworms Necator americanus and Ancylostoma duodenale as soil-transmitted helminths. The human whipworm ( Trichuris trichiura or Trichocephalus trichiuris) is a Roundworm, which causes Trichuriasis when it infects The hookworm is a parasitic Nematode worm that lives in the Small intestine of its host which may be a Mammal such as a Dog, The hookworm is a parasitic Nematode worm that lives in the Small intestine of its host which may be a Mammal such as a Dog, It is estimated that some 1. 2 billion people are infected with A. lumbricoides.
Infections with A. lumbricoides occur by the accidental ingestion of mature, embryonated eggs, typically in food or on fingers. The egg hatches in the intestine, penetrates the mucosa and passes via the portal blood vessels to the lungs. There the larva breaks out into the alveoli and is coughed up and swallowed. If large numbers of larvae are present this can cause verminous pneumonia. The larvae then pass though the stomach again and grow to become adult worms in the small intestine. A female A. lumbricoides can grow up to 40 cm long and weigh 9 g. An adult male worm is about half the weight of a female and up to 30 cm long. Large numbers of worms can accumulate in the intestine which can cause intestinal obstruction, or they can migrate into the bile duct or pancreatic duct and cause obstruction there.
The distribution of worms among hosts is typically high aggregated, so that the majority of people have light infections while a small proportion have moderate to heavy infections. The distribution of A. lumbicoides and many other intestinal helminths is empirically best described by the negative binomial distribution. In Probability and Statistics the negative binomial distribution is a Discrete probability distribution. The heaviest infections with A. lumbricoides are typically found among children of school-age (5 - 14 years).
Treatment
Infections with A. lumbricoides are easily treated with a number of anthelmintic drugs:
- pyrantel pamoate given as a single dose of 10 mg/kg;
- levamisole given as a single dose of 2. Anthelmintics or antihelminthics are drugs that expel parasitic Worms ( Helminths) from the body by either stunning or killing them Pyrantel pamoate is used as a deworming agent in the treatment of Hookworms (all species and Roundworms ( Parascaris equorum, aka ascarids in humans Levamisole (Ergamisol HCl salt is an Antibiotic belonging to a class of synthetic Imidazothiazole derivatives 5 mg/kg;
- mebendazole given as a single dose of 500 mg;
- albendazole given as a single dose of 400 mg. Albendazole, marketed as Albenza Eskazole or Zentel is a member of the Benzimidazole compounds used as a drug indicated for the treatment of a variety
See ascariasis for more information. Ascariasis is a Human Disease caused by the parasitic Roundworm Ascaris lumbricoides.
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