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West Nile Virus

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  • NIAID's Role in Addressing West Nile Virus

    The National Institute of Allergy and Infectious Diseases (NIAID) supports research on West Nile Virus disease through its comprehensive emerging infectious disease program. This program supports research on bacterial, viral, and other types of disease-causing microbes.

    Understanding West Nile Virus

    The West Nile Virus first emerged in the Western Hemisphere in 1999 in the New York City area and has since spread across the United States. The virus is transmitted to humans by mosquitoes.

    Most human infections are mild, causing fever, headache, and body aches, often accompanied by a skin rash and swollen lymph glands. If the virus crosses the blood-brain barrier, however, it can cause life-threatening conditions that include inflammation of the brain and spinal cord.

    News and Media

    Mutation that Protects Against HIV Infection May Raise Risk of West Nile Virus Illness—Jan. 17, 2006

    Promising New West Nile Therapy Cures Disease in Mice—April 24, 2005

    NIAID Begins Clinical Trial of West Nile Virus Vaccine—April 18, 2005

    All West Nile Virus News and Media


    Volunteer for Clinical Studies
    Volunteer for NIAID clinical studies related to West Nile Virus by going to Clinicaltrials.gov.

    Related Links

    View a list of links for more information about West Nile Virus.

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    Volunteer for Clinical Studies
    Volunteer for NIAID clinical studies related to West Nile Virus by going to Clinicaltrials.gov.

    Related Links

    View a list of links for more information about West Nile Virus.