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Dracunculiasis, also called Guinea-worm disease, is a parasitic infection by the Guinea worm, Dracunculus medinensis.A person becomes infected by drinking water contaminated with Guinea-worm larvae that reside inside copepods (a type of small crustacean).
Dracunculus medinensis (Guinea worm, dragon worm, fiery serpent [1]) is a nematode that causes dracunculiasis, also known as guinea worm disease. [2] The disease is caused by the female [ 3 ] which, at around 80 centimetres (31 inches) in length, [ 4 ] is among the longest nematodes infecting humans. [ 5 ]
Dracunculus is a genus of spirurid nematode parasites in the family Dracunculidae.. The worms can reach a metre in length. If one simply pulls off the protruding head of the worm, the worm will break and leak high levels of foreign antigen which can lead to anaphylactic shock and fast death of the host.
Villagers learned to watch for and report new cases — often for rewards of $100 or more. Infected people and dogs had to be prevented from tainting water sources. The goal was to break the worm’s life cycle — and therefore eliminate the parasite itself — in each endemic community, eventually exterminating Guinea worm altogether.
From New Hampshire to Oregon, researchers are trying to figure out what’s causing an infectious respiratory disease among dogs that has turned deadly in rare cases.
Guinea worm disease remains on the cusp of being eradicated, with the global number of cases in 2023 holding steady at 13, according to a provisional account released by The Carter Center. Global ...
The period from infection to egg laying is three to six weeks, depending on the route of infection and the age of the dog. T. canis does not require an intermediate host for development, but infection of dogs can occur via collective hosts such as rodents and birds. In collective hosts (paratenic hosts), no complete development cycle of the ...
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