What is autoinfection in parasitology?
Auto-infection is a life history strategy used by many parasitic organisms, including digenetic trematodes. The process of autoinfection most frequently involves the transfer of a life cycle stage of the parasite from one site to another inside the same host, usually accompanied by morphological transformation.
What causes autoinfection?
Life Cycle Rhabditiform larvae in the gut become infective filariform larvae that can penetrate either the intestinal mucosa or the skin of the perianal area, resulting in autoinfection.
What worm causes autoinfection?
stercoralis is autoinfection. Only one other species in the genus Strongyloides, S. felis, has this trait. Autoinfection is the development of L1 into small infective larvae in the gut of the host.
What are the symptoms of Strongyloidiasis?
The majority of people infected with Strongyloides do not have symptoms. Those who do develop symptoms often have non-specific, or generalized complaints. Some people develop abdominal pain, bloating, heartburn, intermittent episodes of diarrhea and constipation, a dry cough, and skin rashes.
How does autoinfection affect host?
Autoinfection involves premature transformation of noninfective larvae (rhabditiform, 0.25 mm × 0.015 mm) into infective larvae (filariform, 0.5 mm × 0.015 mm), which can penetrate the intestinal mucosa (internal autoinfection) or the skin of the perineal area (external autoinfection), thus establishing a developmental …
Does Taenia Solium cause autoinfection?
Cysticercosis is caused by swallowing eggs from T solium. The eggs are found in contaminated food. Autoinfection is when a person who is already infected with adult T solium swallows its eggs. This occurs due to improper hand washing after a bowel movement (fecal-oral transmission).
How autoinfection happens in enterobius Vermicularis?
The life cycle of Enterobius, the so-called pinworm, begins with egg deposition by gravid adult female worms on the perianal folds. Autoinfection occurs by scratching the perianal area and transferring infective eggs to the mouth with contaminated hands.
What is an autoinfection and example?
: reinfection with larvae produced by parasitic worms already in the body.
Can strongyloides be cured?
Hyperinfection syndrome and disseminated strongyloidiasis require prolonged ivermectin treatment. For all Strongyloides infections, document cure by repeated stool examinations.
How autoinfection happens in relation to parasitic life cycle?
What is difference between Taeniasis and cysticercosis?
What is the difference between cysticercosis and taeniasis? Remember, taeniasis is the infection of a human with the adult form of the beef or pork tapeworm. Cysticercosis is the infection of a human with the larval stage of the pork tapeworm, T. solium, only.
What is the meaning of the word autoinfection?
Here are all the possible meanings and translations of the word autoinfection. The infection of a primary host with a parasite, particularly a helminth, in such a way that the complete life cycle of the parasite happens in a single organism, without the involvement of another host.
What is an infection that is already present in the body?
An infection caused by a disease agent that is already present in the body. Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved. Reinfection by microbes or parasitic organisms that have already passed through an infective cycle.
What is the meaning of self infection?
Self-infection by direct contagion as with parasite eggs passed in the infectious state transmitted by fingernails (anal-oral route). Synonym (s): autoreinfection. Infection with bacteria or viruses surviving on or in the body, or transferred from one part of the body to another.
What is the definition of infectious disease in biology?
(aw’tō-in-fek’shŭn), 1. Reinfection by microbes or parasitic organisms that have already passed through an infective cycle. 2. Self-infection by direct contagion, as with pinworm (Enterobius vermicularis) eggs passed in the infectious state and transmitted by fingernails (anal-oral route).