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Nov. 30, 2023. West Nile virus is primarily spread by mosquitoes. Learn about areas at risk, the illness it causes, and ways to prevent becoming infected. Homepage for CDC's West Nile virus website.
May 15, 2024 · Key points. West Nile virus (WNV) can cause an acute febrile illness or neurologic disease, including meningitis, encephalitis, and acute flaccid myelitis. The incubation period ranges from 2–14 days but can be longer in immunocompromised persons.
West Nile virus infections occur in mid- to late summer and early fall in mild zones. It can also occur year-round in southern climates. Most often, the West Nile virus causes no symptoms or a mild, flu-like illness. But the virus can cause life-threatening illnesses, such as: Inflammation of the brain (encephalitis)
May 15, 2024 · West Nile virus disease (West Nile) is caused by a virus primarily spread to people through the bite of infected mosquitoes. West Nile virus is maintained in the environment between mosquitoes and birds. People do not spread the infection other than rarely through blood transfusions, organ transplantation, and mother to baby.
May 11, 2024 · West Nile virus (WNV) is a mosquito-borne virus that causes disease in humans, horses, and birds. WNV spreads to people through the bite of an infected mosquito, and it can make people sick and even cause death. WNV is common in the United States, especially in California, and is a problem that is here to stay.
Aug 19, 2022 · West Nile virus (WNV) is a member of the flavivirus family, which includes other mosquito-borne viruses such dengue and Zika. WNV emerged for the first time in the Western Hemisphere in New York City in 1999 and has since spread across the United States. It is now the most common arthropod-borne virus found in the U.S.
Sep 29, 2018 · What Is West Nile Virus Infection (West Nile Fever)? Symptoms. Causes. Risk factors. Diagnosis. Treatment. Facts and statistics. Prevention. Outlook. Overview. A mosquito bite can turn...
