At a Glance
Why Get Tested?
To help diagnose an infection caused by West Nile virus (WNV); to determine the cause of viral meningitis or encephalitis or febrile illness that occurs during the summer season; to detect the presence of WNV and to track its spread in the community and across the United States; to screen for WNV in donated units of blood, tissues, or organs
When to Get Tested?
When you have symptoms suggesting WNV such as headache, fever, stiff neck, and muscular weakness and have been exposed to mosquitos or when you have had a diagnosis of encephalitis and/or meningitis associated with the summer season
Cerebrospinal fluid collected from a spinal tap and/or a blood sample drawn from a vein in your arm
Test Preparation Needed?