Most cases of West Nile virus infection are mild and do not cause serious symptoms. Most infections in the U.S. occur in the early fall. In certain cases, inflammation of the brain (encephalitis) develops in infected people. When symptoms and signs do occur, these typically include
If severe illness with encephalitis is present, symptoms can include
- high fever,
- neck stiffness,
- numbness, or
Cause of West Nile encephalitis
An infection with the West Nile virus (WNV) causes West Nile encephalitis. The infection spreads from infected birds to humans through the bite of mosquitos.
Other west nile encephalitis symptoms and signs
- Body Aches
- High Fever
- Neck Stiffness
- Swollen Lymph Nodes
Pictures, Images, Illustrations & Quizzes
Picture of West Nile Virus
The mosquito-borne virus that causes West Nile fever. One of the flaviviruses, a family of viruses also responsible for dengue,...
West Nile Virus Infection: Causes, Symptoms, and Treatment
West Nile virus is spread through infected mosquitoes. Learn about this mosquito borne illness, its causes, symptoms like...
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