West Nile virus: What you should know

POSTED: 09:05 AM PDT Aug 15, 2012 

The U.S. is experiencing one of its worst West Nile outbreaks in years. Here's what you need to know about this mosquito-borne virus.

West Nile - Severe symptoms
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About one in 150 people infected will develop severe symptoms. They can include high fever, headache, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, vision loss, numbness and paralysis.

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