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Centers for Disease Control and Prevention. CDC twenty four seven. Saving Lives, Protecting People
West Nile Virus
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West Nile Virus Menu
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West Nile Virus

West Nile virus is primarily spread by mosquitoes. Learn about areas at risk, the illness it causes, and ways to prevent becoming infected.

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For Everyone

  • About
  • Causes and Spread
  • Prevention
  • Data and Maps for West Nile
  • Illness Info

Health Care Providers

  • Clinical Signs and Symptoms
  • Clinical Testing and Diagnosis
  • Treatment and Prevention

Public Health

  • West Nile Virus Surveillance and Control
  • Transmission
  • West Nile Virus Resources
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