What is intermediate host?

  • (noun): A host that is used by a parasite in the course of its life cycle.

Intermediate Host

A secondary host or intermediate host is a host that harbors the parasite only for a short transition period, during which (usually) some developmental stage is completed. For trypanosomes, the cause of sleeping sickness, humans are the secondary host, while the tsetse fly is the primary host, given that it has been shown that reproduction occurs in the insect. Cestodes (tapeworms) and other parasitic flatworms have complex life-cycles, in which specific developmental stages are completed in a sequence of several different hosts.

Read more about Intermediate Host.

Some articles on intermediate host:

Planorbarius Corneus - Parasites
... This species of snail functions as a host for several parasite species First intermediate host for Prosthogonimus ovatus First intermediate host for ...
Cestoid - Reproduction and Life Cycle of The Tapeworms
... there are no asexual phases as in other flatworms, but complicated in that at least one intermediate host is required as well as the definitive host ... Many tapeworms have a two-phase life cycle with two types of host ... This is known as the intermediate host ...
Tarebia Granifera - Ecology - Parasites
... Tarebia granifera serves as the first intermediate host for a variety of trematodes in its native south east Asia ... Tarebia granifera also serves as intermediate host for the philopthalmid eyefluke Philopthalmus gralli Mathis Ledger, 1910 which has recently (2005) been reported ... The snail host implicated in this outbreak was Melanoides tuberculata but the rapid spread and high population densities achieved by Tarebia granifera ...
Intermediate Host
... A secondary host or intermediate host is a host that harbors the parasite only for a short transition period, during which (usually) some developmental stage is completed ... the cause of sleeping sickness, humans are the secondary host, while the tsetse fly is the primary host, given that it has been shown that reproduction occurs in the insect ... in which specific developmental stages are completed in a sequence of several different hosts ...
Schistosoma Indicum
... The most important the first intermediate host is a freshwater snail Indoplanorbis exustus that is the sole natural intermediate host for Schistosoma indicum (and ... The main reasons were the use of a different intermediate host (Ferrissia tenuis) and final host (man) with difference in location (urinary system ) which is not possible for any ... cross-immunity against Schistosoma incognitum by immunising the host against Schistosoma indicum ...

Famous quotes containing the words host and/or intermediate:

    Thrust, my daughter or son, to escape, there is none, none, none,
    Nor when all ponderous heaven’s host of waters breaks.
    Dylan Thomas (1914–1953)

    Complete courage and absolute cowardice are extremes that very few men fall into. The vast middle space contains all the intermediate kinds and degrees of courage; and these differ as much from one another as men’s faces or their humors do.
    François, Duc De La Rochefoucauld (1613–1680)