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West Nile Virus


Also known as: WNV
Formal name: West Nile Virus
Related tests: Antibody tests

At a Glance

Why Get Tested?

To determine the cause of viral meningitis or encephalitis that occurs during the summer season; to detect the presence of West Nile Virus (WNV) and to track its spread in the community and across the United States

When to Get Tested?

When a patient has symptoms suggesting WNV such as headache, fever, stiff neck, and muscular weakness and a diagnosis of encephalitis and/or meningitis; also used as a screen for WNV in donated units of blood

Sample Required?

Cerebrospinal fluid collected from a spinal tap and/or a blood sample drawn from a vein in your arm

Test Preparation Needed?

None