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Friday, August 7, 2020 | History

2 edition of Water supply and Dracunculus medinensis in Africa found in the catalog.

Water supply and Dracunculus medinensis in Africa

Robert W. Larsson

Water supply and Dracunculus medinensis in Africa

by Robert W. Larsson

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  • 19 Currently reading

Published .
Written in English


Edition Notes

Thesis (Ph.D.) - Loughborough University of Technology, 1994.

Statementby Robert W.Larsson.
ID Numbers
Open LibraryOL19696044M

SUMMARY Dracunculiasis, also known as guinea worm disease, is caused by the large female of the nematode Dracunculus medinensis, which emerges painfully and slowly from the skin, usually on the lower limbs. The disease can infect animals, and sustainable animal cycles occur in North America and Central Asia but do not act as reservoirs of human infection. Dracunculus medinensis has been a target for eradication for many years. Once widespread in Asia and Africa, this parasite has been funneled down to contained cases in a handful of countries within Northern Africa. Emphasis on a region’s water supplies, its seasonality, and local habits are needed for effective eradication.

Larvae are immature forms of the Dracunculus medinensis worm. The Dracunculus medinensis worm typically emerges through the skin on a lower limb approximately 1 year after infection, causing pain and disability 1). Dracunculiasis or Guinea worm disease affects poor communities in remote parts of Africa that do not have safe water to drink. ?Note: This page may contain content that is offensive or inappropriate for some readers. Dracunculiasis helminthiasis caused by the roundworm (helminth) Dracunculus medinensis, a nematode that parasitizes mainly subcutaneous tissue. It attacks man and some animals (dogs, jackals, and so forth). It is widespread in some parts of Africa, India, the.

We describe 11 cases of suspected Dracunculus medinensis infection in which the worm recovered was identified as Onchocerca volvulus. Identification was based on morphology of the examined specimen. Oct. 1, Progress Toward Global Eradication of Dracunculiasis, January –June Published by Centers for Disease Control and Prevention. Guinea worm, caused by the parasitic worm Dracunculus medinensis, is known as a “ neglected tropical disease.”This worm is the largest of the tissue parasite infecting humans. It lives in the deep connective tissue of the intestinal tract. Currently, Guinea worm disease is found only in 13 countries throughout Sub-Saharan Africa.


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Water supply and Dracunculus medinensis in Africa by Robert W. Larsson Download PDF EPUB FB2

Donald R. Hopkins, in Hunter's Tropical Medicine and Emerging Infectious Diseases (Tenth Edition), Introduction. Dracunculiasis is caused by the nematode Dracunculus medinensis, and is a disabling disease of poor rural residents in parts of three countries in Africa. 1,2 D.

medinensis has been known since ancient Egyptian times, and the life cycle of the parasite was fully described by.

Dracunculus medinensis or Guinea worm is a nematode that causes dracunculiasis, also known as guinea worm disease. The disease is caused by the female which, at up to 80 centimetres (31 inches) in length, is among the longest nematodes infecting humans. In contrast, the longest recorded male Guinea worm is only 4 cm (1 1 ⁄ 2 in).The common name "guinea worm" is derived from the Guinea region Genus: Dracunculus.

2. Biology of the parasite. Dracunculiasis is transmitted exclusively to humans via drinking water contaminated with infected copepod Cyclops, the intermediate host of D. medinensis. Following ingestion, the Cyclops die and release D. medinensis larvae, which penetrate the host stomach and intestinal wall, and enter the abdominal cavity and retroperitoneal by: Today, dracunculiasis, more commonly known as Guinea Worm Disease, is only found in 13 countries in sub-Saharan Africa.

It is caused by a nematode, or flatworm, Dracunculus medinensis, which infects small Crustaceans, called Cyclops which dwell in water supplies. Human because infected if they drink from an unfiltered water supply, which.

Water supply and Dracunculus medinensis in Africa Author: Larsson, Robert W. ISNI: The thesis examines control and eradication of Guinea worm in West Africa and investigates factors, especially water supply, related to the incidence of Guinea worm.

The study was carried out in North Zou, Benin between and and Author: Robert W. Larsson. Donald R. Hopkins, in Hunter's Tropical Medicine and Emerging Infectious Diseases (Tenth Edition), Introduction. Dracunculiasis is caused by the nematode Dracunculus medinensis, and is a disabling disease of poor rural residents in parts of three countries in Africa.

1,2 D. medinensis has been known since ancient Egyptian times, and the life cycle of the parasite was fully.

Abstract. It was in when I had just been appointed to a lectureship at the London School of Hygiene and Tropical Medicine that George Nelson suggested that a research project on the nematode Dracunculus medinensis might yield fruitful results and would certainly provide a field in which there would be little competition for funds.

Over twenty years later I hope that the present world. The epidemiology of the guinea worm, Dracunculus medinensis, was studied in the dry savanna zone of West monthly incidence data collected over a period of four years showed peak transmission occurring in June and July at the beginning of the rainy season.

Dracunculiasis, also known as guinea worm disease, is caused by the large female of the nematode Dracunculus medinensis, which emerges painfully and slowly from the skin, usually on the lower limbs.

The disease can infect animals, and sustainable animal cycles occur in North America and Central Asia but do not act as reservoirs of human infection. Dracunculus medinensis, or human Guinea worm (GW), causes a painful and debilitating infection.

The global Guinea Worm Eradication Program (GWEP) has successfully reduced human GW cases from Dracunculiasis is a parasitic infection caused by a filarial worm (Dracunculus medinensis {i.e., Guinea worm}) that is transmitted through contaminated drinking water.

Approximately 1 year after a person is infected, one or more meter-long adult female worms begin to emerge through the skin, often incapacitating the patient for greater than or. Water supply and Dracunculus medinensis in Africa. (Thesis) ' ' Larsson RW Publisher: Loughborough University of Technology [] Metadata Source: The British Library Type: Thesis.

Abstract. Menu. Formats. Abstract. EThOS. About. About Europe PMC; Funders; Joining Europe PMC. Water supply and Dracunculus medinensis in Africa. By Robert W. Larsson. Download PDF (27 MB) Abstract. A Doctoral Thesis. Submitted in partial fulfillment of the requirements for the award of Doctor of Philosophy of Loughborough thesis examines control and eradication of Guinea worm in West Africa and\ud investigates factors.

Dracunculiasis (guinea-worm disease) is a parasitic disease caused by Dracunculus medinensis that is a long, thread-like worm. Dracunculiasis is commonly known as guinea-worm disease (GW). It is transmitted exclusively when people drink stagnant water contaminated with parasite-infected water fleas (Cyclops- that carry infective guinea-worm larvae).

Dracunculiasis is caused by drinking water contaminated by water fleas that host the Dracunculiasis medinensis larvae. Dracunculiasis has a history of being very common in some of the world's poorest areas, particularly those with limited or no access to clean water.

In these areas, stagnant water sources may still host copepods, which can carry the larvae of the guinea worm. Dracunculiasis is a crippling parasitic disease caused by D. medinensis, a long thread-like worm. The disease, which has afflicted humanity for centuries, is transmitted exclusively when people drink water contaminated with parasite-infected water fleas.

During the s, dracunculiasis was endemic in. Considered a neglected tropical disease, Guinea worm disease (dracunculiasis) is a parasitic infection caused by the nematode roundworm parasite Dracunculus medinensis.

It is contracted when people consume water from stagnant sources contaminated with Guinea worm larvae. Dracunculus is a genus of spiruroid nematode parasites in the family species infest humans and alter their hosts’ behaviour in a way that supports the worm's reproductive cycle.

Dracunculus causes a blister to form on the host, often on the foot or lower leg, causing severe pain and a boiling sensation. 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 domestic animals through contaminated water.D.

medinensis was described in Egypt as early as the 15th century bce and may have been the “fiery serpent” of the Israelites described in the Bible. Dracunculus medinensis causes the disease dracunculiasis which is commonly referred to as Guinea worm disease (GWD).

Individuals become infected by drinking water containing water fleas harboring the Guinea worm larvae. Stomach acid is able to digest the water fleas; however, the. Dracunculasis or guinea worm disease is a preventable infection caused by the parasite Dracunculus medinensis.

Adult female Dracunculus worms emerge from the skin of infected persons annually. Persons with worms protruding through the skin may enter sources of drinking water and unwittingly allow the worm to release larvae into the water.- (drah-KUNK-you-lus / MED-I-NEN-sis).

See more ideas about Skin pain, Skin blisters, Worms pins.Genus – Dracunculus. Species – medinensis. Dracunculus medinensis is a nematode endoparasite, inhabiting the sub-cutaneous tissues of man, dog, cat and fur bearing wild animals.

In man it occupies especially the body parts like the legs, arms and back. The parasite causes a disease called “dracunculosis” (dracunculiasis or dracontiasis).