Flaviviruses - encephalitis" or"West Nile mening...

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Flaviviruses: There are four agents that cause disease in humans; 1. St. Louis Encephalitis (SLE): Transmitted by mosquitos, a viremia occurs but in most cases no disease results. In some, however, central nervous system involvement gives inflammation and neuronal degeneration, clinically presenting with fever, headache, convulsions, coma and death. 2. West Nile Encephalitis (WNE): WNE is very similar to SLE and it is also transmitted by mosquitos. In most cases no disease results. Mild, flu-like cases may be referred to as "West Nile fever". More severe cases of "West Nile
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Unformatted text preview: encephalitis" or "West Nile mening 3.Dengue fever and Dengue Hemorrhagic fever: The vinrus producing these diseases initially replicates in the skin at the site of the mosquito bite. Next, lymph nodes and the RE system become involved and viremia results. Fever and rash lasting 3-9 days defines the symptomology. Dengue fever is usually self-limiting but Dengue Hemorrhagic fever often involves additional processes (probably immunopathologic) that produce extreme vascular permeability, shock and death....
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This note was uploaded on 11/05/2011 for the course BIOLOGY MCB2010 taught by Professor Jessicadigirolamo during the Fall '10 term at Broward College.

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