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  2. Oct 16, 2023 · West Nile is a virus that spreads through mosquito bites. Most people infected with West Nile virus don’t have symptoms. About 1 in 5 people have symptoms like fever, rash and muscle aches. Rarely, West Nile can cause serious brain and spinal cord inflammation (encephalitis and meningitis).

  3. Sep 29, 2018 · Anyone bitten by an infected mosquito can get West Nile virus. However, less than one percent of people who are bitten develop severe or life-threatening symptoms.

    • Rachel Nall, MSN, CRNA
  4. Apr 11, 2024 · When symptoms of West Nile virus do occur, they typically include fever, headache, body aches, weakness, and fatigue. Some people may also experience nausea, vomiting, diarrhea, rash, or swollen lymph glands.

    • 4 Blackfan Circle, 4th Floor, Boston, 02115, MA
    • hhp_info@health.harvard.edu
    • (877) 649-9457
  5. May 15, 2024 · Healthcare providers diagnose West Nile virus infection based on: Signs and symptoms. History of possible exposure to mosquitoes that can carry West Nile virus. Laboratory testing of blood or spinal fluid. Your healthcare provider can order tests to look for West Nile virus infection or other infections that can cause similar symptoms.

  6. May 15, 2024 · Most symptomatic persons experience an acute systemic febrile illness that often includes headache, weakness, myalgia, or arthralgia; gastrointestinal symptoms and a transient maculopapular rash also are commonly reported.

  7. West Nile virus can cause a fatal neurological disease in humans. However, approximately 80% of people who are infected will not show any symptoms. West Nile virus is mainly transmitted to people through the bites of infected mosquitoes. The virus can cause severe disease and death in horses.

  8. Humans get West Nile from the bite of an infected mosquito. Usually, the West Nile virus causes no symptoms or only mild, flu-like symptoms. The virus can cause life-limiting illnesses, such as encephalitis, meningitis, or meningoencephalitis. There is no vaccine available to prevent West Nile virus.

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