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 ?
In immunocompromised patients, however, the larvae change rapidly into infectious, filariform larvae and reinvade the gut, resulting in a cycle of autoinfection.
The term hyperinfection is used to denote Strongyloides autoinfection with a multi-log increase in parasite burden.
In immunocompromised patients, the endogenous autoinfection cycle may result in the overproduction and dissemination of larvae into intestinal and extraintestinal tissues, including the central nervous system, leading to the hyperinfection syndrome which can be lethal (5).
A potentially fatal outcome is associated with massive hyperinfection due to autoinfection cycles.
In an immunocompetent host, the rate of ongoing autoinfection remains controlled, resulting in a low parasite burden.
7] The severity of the symptoms relates to the worm burden, along with evidence of autoinfection.
The long persistence is the consequence of the autoinfection cycle typical of this parasite as described above.
Overwhelming parasitemia may occur in immunocompromised patients due to repeated autoinfection and may cause hyperinfective and invasive strongyloidiasis.
2,4] Immunocompromised hosts with Strongyloides infections may develop autoinfection and disseminated strongyloidiasis as a result of direct transformation of rhabditiform larvae to filariform larvae within the gastrointestinal tract.