What is the pathogenesis of Ascaris lumbricoides?
Pathogenesis. The pathogenesis of ascariasis is generally related to organ damage and host reactions to larval migration as well as the number and location of adult worm in the body. Ascaris larvae migrating through the intestinal mucosa, liver and lungs provoke hypersensitivity reaction in the human host.
What is the importance of Ascaris lumbricoides?
lumbricoides infection in human is known as ascariasis, and is the major cause of disease burden, especially in developing countries, with an estimated loss of 1.2 to 10.5 disability-adjusted life years. Moreover, significant morbidity rate with serious health consequences is observed in 122 million cases per year.
What is classification of Ascaris?
ClassSecernentea. OrderAscaridida. FamilyAscarididae. GenusAscarisintestinal roundworms. SpeciesAscaris lumbricoideshuman intestinal roundworm.
What is the infection of Ascaris called?
Ascariasis is an infection of the small intestine caused by Ascaris lumbricoides, which is a species of roundworm. Roundworms are a type of parasitic worm. Infections caused by roundworms are fairly common. Ascariasis is the most common roundworm infection.
What is the common name of Ascaris lumbricoides?
Ascaris lumbricoides (human roundworm) and Ascaris suum (pig roundworm) are hard to tell apart. It is unknown how many people worldwide are infected with Ascaris suum.
What domain is Ascaris lumbricoides?
EukaryoteAscaris lumbricoides / Domain
Where is Ascaris lumbricoides found in the body?
Ascaris is an intestinal parasite of humans. It is the most common human worm infection. The larvae and adult worms live in the small intestine and can cause intestinal disease.
What are the characteristics of Ascaris lumbricoides?
INTRODUCTION • Ascaris lumbricoides is the largest nematode (roundworm) parasitizing the human intestine. • Ascaris lumbricoides is an intestinal worm found in the small intestine of man. • They are more common in children then in adult. • As many as 500 to 5000 adult worms may inhabit a single host.
What is the secondary host of Ascaris lumbricoides?
We know that there is no secondary host in the life history of Ascaris Lumbricoides, hence, infection to host (man) occurs when he swallows the infective eggs of Ascaris with contaminated food or water.
What is the global prevalence of Ascaris lumbricoides?
While infection occurs throughout most of the world, A. lumbricoides infection is most common in sub-Saharan Africa, the Americas, China, and east Asia. Ascaris lumbricoides eggs are extremely resistant to strong chemicals, desiccation, and low temperatures.
Who discovered Ascaris lumbricoides?
In 1758 Linnaeus named them Ascaris lumbricoides. For many centuries, they were thought to arise by spontaneous generation. In 1855, Ascaris eggs were found in human faeces by Henry Ransom in England then this was described in the literature two years later by Casimir-Joseph Davaine in France.