autoinfection


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Related to autoinfection: hyperinfection, retroinfection

autoinfection

[¦ȯd·ō‚in′fek·shən]
(medicine)
Reinfection by an organism existing within the body or transferred from one part of the body to another.
References in periodicals archive ?
Strongyloides infection, in contrast, can lead to autoinfection in which rhabditiform larvae can re-penetrate the gastrointestinal mucosa or the perianal skin.
16) Also, alcohol stimulates the transformation of rhabditiform larvae to filariform larvae within the intestine, thereby leading to autoinfection.
Rhabditiform larvae mature and penetrate the skin in perianal area, leading eventually to autoinfection.
Endogenous autoinfection enables this nematode to develop into its host, which leads to the persistence of chronic infection several decades after a person has left a disease-endemic area (3).
stercoralis has the unique feature of transmitting from the parasitic form to the infective stage within the body, rather than emerging and forming free-living stages, causing autoinfection.
Aberrantly, humans can assume the role of intermediate host by accidental ingestion of eggs in contaminated water or uncooked vegetables; by autoinfection due to unsanitary personal habits; or by reverse peristalsis of the eggs from the intestine to stomach.
Strongyloides hyperinfection can result from autoinfection in immunocompromised individuals, where infective larvae can cause a severe disseminated illness with a high fatality rate.
Ultrastructural details of the xenoma of Loma myrophis (phylum Microsporidia) and extrusion of the polar tube during autoinfection.
Autoinfection can occur and represents a permutation of the life cycle.
Humans develop cysticercosis by ingestion of Taenia solium eggs in fecally contaminated food or by autoinfection (from eggs carried from the intestine into the stomach by reverse peristalsis).
Once rhabditiform larvae mature in the host, autoinfection occurs and the filariform larvae are now free to reinfect.