Health Information

West Nile Virus

What is it?

West Nile is a virus transmitted by mosquitoes, which can cause meningitis (inflammation of the lining of the brain or spinal cord) or encephalitis (inflamation of the brain). The West Nile virus is found in the blood of infected birds. Mosquitoes may become infected after biting the birds and may then transmit it to humans.

UHN Resources

UHN Brochures and Pamphlets

• West Nile Virus and Blood Transfusions

UHN Clinics or Centres

• Infectious Diseases - Advanced Medicine & Surgery

Related Web Sites

• Ontario Ministry of Health & Long-Term Care
  Provides basic information on the West Nile virus (WNV) including what it is, prevention methods, symptoms, insect repellent, DEET, and mosquito control. Also discusses the Ontario government's action plan to combat WNV.
• West Nile Virus - Health Canada
  Describes the West Nile virus (WN virus) including origination, dispersal, and information on mosquitoes and birds that can carry the virus. Includes recent updates, history and questions related to human infection.