ZOO4232 - Lecture 8 Blood Flukes

ZOO4232 Lecture 8 - 1 BLOOD FLUKES The human disease complex is called schistosomiasis or bilharziasis or snail fever This disease is caused or

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Unformatted text preview: 9/23/2010 1 BLOOD FLUKES The human disease complex is called schistosomiasis or bilharziasis or snail fever. This disease is caused or bilharziasis or snail fever. This disease is caused primarily by three members of the genus Schistosoma. Schistosoma mansoni, S. haematobium and S. japonicum There are several other species that caused human disease but are much less common. Human infections are in excess of 250 million and China has more than 15 million cases. Theodor Bilharz, a German parasitologist discovered one of the parasites, S. haematobium , responsible for urinary schistosomiasis. There are recorded accounts of the disease dating back to the pharaoinic times. It is referenced 1500B C for the treatment of bloody urine referenced 1500B.C. for the treatment of bloody urine and calcified eggs and have been found in the viscera of Egyptian mummies dating back to 1200 B.C. The fossilized intermediate host (Bulinid snail) for S. hemat- obiium have been uncovered in the city of Jericho. 9/23/2010 2 It is thought that the city's well was infested with infected snails that lead to a high incidence of schistomiasis among the people of Jericho. Too debilitated by the disease to defend their city of repair the wall that surrounded the city they were easily defeated by Joshua surrounded the city they were easily defeated by Joshua army. Without knowing the cause of the disease, Joshua order the city to be destroyed. The city remained deserted for over 500 years, and after centuries of drought, the snails died and city is now parasite free. The French invasion of Egypt during the early part of the nineteenth century was probably the first largescale outbreak and contact the Western world had with Schistomiasis, Amoebic dysentery, and Trachoma....
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This note was uploaded on 09/25/2010 for the course ZOO 4232 taught by Professor Kima during the Fall '10 term at University of Florida.

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ZOO4232 Lecture 8 - 1 BLOOD FLUKES The human disease complex is called schistosomiasis or bilharziasis or snail fever This disease is caused or

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