What is West Nile Virus
What exactly is West Nile Virus? Our medical encyclopedia can get you started in your journey to learn more about this condition. Continue your research by clicking a new category in the left navigation.
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West Nile Virus Definition
West Nile virus is typically transmitted by mosquitoes. It first appeared in the US in 1999. It has been found most often in Africa, Asia, the Middle East, and Europe. Most infections with this virus cause no illness at all. However, about 1/5 of people infected with the virus suffer flu-like symptoms including:
- Fever
- Nausea
- Vomiting
- Headache
- Fatigue
About 1/150 people infected with the virus develop neurologic symptoms including:
- Encephalitis -inflammation of the brain
- Meningitis -inflammation of the membrane covering the brain and spinal cord
- Poliomyelitis -paralysis combined with fever and meningitis
© 2009 Nucleus Medical Media, Inc.
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