Dracunculus medinensis guinea worm biology discussion. The diseases alternate name, dracunculiasis, is latin for affliction with little dragons, which adequately describes the burning pain associated with the infection. Natural history and genetic diversity of dracunculus spp. Guinea worm disease, also called dracunculiasis or dracontiasis, infection in humans caused by a parasite known as the guinea worm dracunculus medinensis. The fiery serpent of the biblical israelites numbers 21. In man it occupies especially the body parts like the legs, arms and back. It is the only disease transmitted solely by drinking water, and humans are its only. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram.
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Dracunculidae is the guinea worm of humans in asia and africa. Dracunculus medinensis the guinea worm 1 dracunculus medinensisthe guinea worm. Antibody and cytokine responses in dracunculus medinensis patients at distinct states of infection. Dracunculiasis guinea worm disease is a parasitic disease that is limited to remote, rural villages in subsaharan african countries that do not have access to. Antibody and cytokine responses in dracunculus medinensis. Knopp s1, amegbo ik, hamm dm, schulzkey h, banla m, soboslay pt. Guinea worm dracunculus medinensis infection in a wild. The peculiar epidemiology of dracunculiasis in chad. Blister is a type of lesion which appears whenever the female worm of dracunculus medinensis makes an. It has been introduced into america, the west indies, and fiji. Dracunculiasis guinea worm disease is caused by the nematode roundworm dracunculus medinensis.
Dracunculus medinensis dracunculus medinensis, commonly known as guinea worm, belongs to the phylum nematoda and is the only nematode associated with signi. The parasite has been reported in dogs, cats, horses, and cattle as well as other species in endemic areas. Also known as guinea worm for its high prevalence along the gulf of guinea, dracunculus medinensis little dragon from medina is a parasitic nematode that infects humans and. The parasite causes a disease called dracunculosis dracunculiasis or dracontiasis.
Humans become infected by drinking unfiltered water containing copepods small crustaceans which are infected with larvae of d. Presentation by joy tapp at georgia state university 111006 slideshare uses cookies to improve functionality. Most spirurids are tissue parasites and produce eggs. Dracunculus medinensis is a nematode endoparasite, inhabiting the subcutaneous tissues of man, dog, cat and fur bearing wild animals. This parasite can survive in water, human, and microscopic animal. Caused by dracunculus medinensis infection due to drinking contaminated water. Ppt dracunculus medinensis the guinea worm powerpoint. All structured data from the file and property namespaces is. Ppt dracunculus medinensis powerpoint presentation. Life cycle of dracunculus medinensis the guinea worm. Generally limited to central africa effort underway to eradicate disease in endemic countries.
From the time infection occurs, it takes between 1014 months for the transmission cycle to complete until a mature worm emerges from the body. Dracunculus medinensis belongs to the nematode parasite family dracunculoidea of the order spirurida, from the secernentea class. Guineaworms develop through four larval stages prior to the formation of large adult worms. In this article we will discuss about the blister formation of dracunculus medinensis. Dracunculus medinensis christian brothers university. Group 7 dominic gamutan lauren keem gabriana darleen apopot andrea czarina noble created using powtoon free sign up at. Dracunculus medinensis the guinea worm powerpoint ppt presentation. Tiffany walsh november 10, 2005 dracunculus medinensis phylum. Some species infest humans and alter their hosts behaviour in a way that supports the worms. This species infects humans in the african region, but are not fatal yusuf 2011. Dracunculus is a genus of spiruroid nematode parasites in the family dracunculidae. Dracunculiasis dracunculus medinensis guinea worm disease. A thirdstage infective larva of dracunculus medinensis, the causative agent of guinea worm disease, was recovered from a wildcaught phrynobatrachus francisci frog in chad.
The adult females of dracunculus are usually found in the subcutaneous tissues, especially of the legs, arms and shoulders. Dracunculiasis is a crippling parasitic disease on the verge of eradication, with 54 human cases reported in 2019. Adult females have been recorded up to 800 mm long, although the few males known do not exceed 40 mm. When the infected copepod is ingested by a mammalian host, the copepod is dissolved by stomach acid and the d. The site of copulation inside the definitive host is unknown, but the males disappear rapidly after the process, and the females, which require about 12 months to reach maturity. The below mentioned article provides a short note on dracunculus medinensis guinea worm morphology of dracunculus medinensis guinea worm. Blister formation of dracunculus medinensis with diagram.
More detailed information about the symptoms, causes, and treatments of dracunculiasis is available below. Phylum nematoda, order camallanata preferred definitive host. Dracunculus definition at, a free online dictionary with pronunciation, synonyms and translation. Dracunculiasis is an tropical disease caused by the nematode dracunculus medinensis, also known as guinea worm. Dracunculiasis symptoms, diagnosis, treatments and causes. Dracunculus medinensis is one of the largest nematodes known. Dracunculus medinensis guinea worm medina worm dragon worm 2. The most cunning parasite from an immunological perspective by. Awareness of dracunculus medinensis dates back to antiquity. The problem of water contamination with dracunculus medinensis in southern sudan kelly jk mbbs and pereira g mbbshons corresponding author. Cleveland 2,3, mark eberhard4, john bearden5, and michael j. Long and thin, the adult female measures 500 to 1200 mm by 0. An infectious disease caused by the nematode dracunculus medinensis which is usually transmitted by drinking water contaminated by infected crustaceans.
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