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How to prevent west nile virus 
These infections were first reported in the united states back in 1999. 
Wnv infections do not lead to any noticeable symptoms or any symptoms at all. Those infected may show a fever, headache, skin rash, body aches, or swollen lymph glands as symptoms.
However, wnv infections can be very serious if the virus makes its entry into the brain. It may give rise to encephalitis, inflammation of the brain, or meningitis, inflammation of the tissue that is seen around the brain and spinal cord.