accidental host

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1. an animal or plant that harbors and provides sustenance for another organism (the parasite).
2. the recipient of an organ or other tissue derived from another organism (the donor).
accidental host one that accidentally harbors an organism that is not ordinarily parasitic in the particular species.
definitive host (final host) a host in which a parasite attains sexual maturity.
intermediate host a host in which a parasite passes one or more of its asexual stages; usually designated first and second, if there is more than one.
paratenic host a potential or substitute intermediate host that serves until the appropriate definitive host is reached, and in which no development of the parasite occurs; it may or may not be necessary to the completion of the parasite's life cycle.
host of predilection the host preferred by a parasite.
primary host definitive host.
reservoir host an animal (or species) that is infected by a parasite, and which serves as a source of infection for humans or another species.
secondary host intermediate host.
transfer host one that is used until the appropriate definitive host is reached, but is not necessary to completion of the life cycle of the parasite.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ac·ci·den·tal host

host that harbors an organism that usually does not infect it.
Farlex Partner Medical Dictionary © Farlex 2012

ac·ci·den·tal host

(ak-si-dentăl hōst)
Host that harbors an organism that usually does not infect it.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Humans, as accidental hosts, are contaminated after ingestion of unsafe water or raw aquatic plants.
renale is frequently descripted in brazilian dogs in comparison to other countries suggesting that the disease is more prevalent in this country, where the diversified tropical ecosystems may facilitate the harmonious coexistence (and adaptation) of the intermediate, paratenic and/or accidental hosts of this parasite thereby increasing the chances of infection and diagnosis (10).
Humans are accidental hosts. Physiological reactions to Toxooara infection depend on the host's immune response and the parasitic load.
(1) As humans are accidental hosts, the parasite cannot complete its life cycle, and immature worms lodge in the central nervous system where they elicit a condition known as eosinophilic meningitis.
Humans are accidental hosts of this nematode, which is not able to reproduce in the human and will eventually degenerate.
(1) They can be divided into intestinal and tissue-dwelling roundworms, and further into those parasitic to humans only or zoonotic infections, where the adult worms parasitise animals and humans are accidental hosts (Toxocara canis, Angiostrongylus species, Gnathostoma species, and Trichinella spiralis).
Humans are accidental hosts and are infected by the ingestion of ova from fomites or contaminated water, and by direct contact with dogs.