bulinus snails schistosomiasis

This snail species hosts two flatworm parasites S. bovis , a cattle parasite, and S. haematobium , the latter being responsible for the urogenital form of schistosomiasis. Schistosomiasis is endemic in Egypt, exacerbated by the country's dam and irrigation projects along the Nile. S. mekongi and S. intercalatum are found locally in Southeast Asia and central West Africa, respectively. [67][68] The earliest known case of infection was discovered in 2014, belonging to a child who lived 6,200 years ago. Schistosomiasis is considered one of the neglected tropical diseases (NTDs) .The parasites that cause schistosomiasis live in certain types of freshwater snails. To the Editor: In Europe, urinary schistosomiasis has previously been detected only in Portugal, where this focus disappeared during the 1950s ().However, freshwater snails of the species Bulinus contortus, B.truncatus, and Planorbarius metidjensis, which are recognized intermediate hosts for Schistosoma haematobium trematodes, have been found in Portugal (), Spain (), and Corsica (5,6). Schistosomiasis is a vector-borne disease caused by parasites of the genus Schistosoma [1], which are hosted and transmitted by minute aquatic snails (10±2mm), belonging to several genera (Biomphalaria, Bulinus, Oncomelia e.t.c.). The first potential reaction is an itchy, papular rash[17]:432 that results from cercariae penetrating the skin, often in a person's first infection. Schistosomiasis, also known as bilharzia, is a disease caused by parasitic worms. [7][57] In 2012, 249 million people were in need of treatment to prevent the disease. Three other species, more localized geographically, are S. mekongi, S. intercalatum, and S. guineensis (previously considered synonymous with S. intercalatum). The detailed specifications laid out in various United Nations documents since the 1950s could have minimized this problem. [5] The disease is especially common among children in developing countries, as they are more likely to play in contaminated water. Key words: Bulinus truncatus, Schistosoma haematobium, snails, susceptible, resistance, light microscopy, electron microscopy. For several weeks, the worm remains in the vessels, continuing its development into its adult phase. [44] The dams appear to have reduced the population of the large migratory prawn Macrobrachium. [14][18] Over time, fibrosis can lead to obstruction of the urinary tract, hydronephrosis, and kidney failure. Molecular reagents include nucleic acids and genomic libraries from the various life cycle stages of the Schistosoma species (cercariae, schistosomula, adult worms and eggs). Those who have been infected for a long time may experience liver damage, kidney failure, infertility, or bladder cancer. nant or slow-moving fresh water where infected Bulinus snails live. "The discovery of Bulinus (Pulmonata: Planorbidae) in a Miocene palaeolake in the Balkan Peninsula", http://www.marinespecies.org/aphia.php?p=taxdetails&id=224352, "Molecular characterization of freshwater snails in the genus Bulinus: A role for barcodes?". Egypt has the world's highest hepatitis C infection rate, and the infection rates in various regions of the country closely track the timing and intensity of the anti-schistosomiasis campaign. https://en.wikipedia.org/w/index.php?title=Bulinus&oldid=973116171, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 August 2020, at 13:03. Field and laboratory studies have suggested that the intermediate snail host species present in Richard Toll and Lac de Guiers (B globosus and B truncatus) can be infected by a wide range of schistosome genotypes.42, 43 The observed range of cercariae genotypes was very similar to those of the miracidia shed by human and livestock populations in Richard Toll and Lac de Guiers, which … At 2 sites, unidentifiable cercaria larvae were revealed through dissection (5 of 70 Bulinus snails in the Rizzanese, 26 of 50 in the Baraci). Urinary schistosomiasis is caused by S. haematobium, with some snails of the genus Bulinus acting as the intermediate hosts. The intermediate host is the Bulinus snail. [5] It belongs to the group of helminth infections. Symptoms include abdominal pain, diarrhea, bloody stool, or blood in the urine. When 20 to 50 percent of children have bloody urine, only school-age children are treated. alexandrina and B. 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