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Schistosomiasis, also known as snail fever, bilharzia, and Katayama fever [1] [2] [9] is a disease caused by parasitic flatworms called schistosomes. [5] It affects the urinary tract or the intestines . [ 5 ]
Vector map from BlankMap-World6, compact.svg by Canuckguy et al. Data from Mortality and Burden of Disease estimates for WHO member states in 2002 (2009-11-07) Combined by Lokal_Profil; Author: Lokal_Profil: Permission (Reusing this file)
Schistosoma is a genus of trematodes, commonly known as blood flukes.They are parasitic flatworms responsible for a highly significant group of infections in humans termed schistosomiasis, which is considered by the World Health Organization to be the second-most socioeconomically devastating parasitic disease (after malaria), infecting millions worldwide.
As of 2021, 251.4 million people worldwide are having schistosomiasis due to different species of Schistosoma. [1] More than 75 million people were given medical treatment. [ 1 ] S. mansoni is the major species causing an annual death of about 130,000. [ 66 ]
Schistosoma intercalatum is a parasitic worm found in parts of western and central Africa. There are two strains: the Lower Guinea strain and the Zaire strain. S. intercalatum is one of the major agents of the rectal form of schistosomiasis, also called bilharzia.
[5] [6] The eggs of S. bovis are not only larger than those of other schistosomes, but also have thicker spine with an elongated shape in the form a spindle. [7] [8] The eggs are therefore the best and simplest identification key from other species. [9] [10] Sonsino later revised the name as Bilharzia crassa in 1877, and then as Gynaecophorus ...
Schistosomiasis was first reported in the Mekong River's Lower Basin region in 1957, from Laotian island of Khong to Cambodian province of Kratié, specifically. [2] It was believed that the cause of these cases was Schistosoma japonicum until 1978, when Neotricula aperta was discovered and it was determined that the Schistosome was a unique species, Schistosoma mekongi. [2]