West Nile Virus

West Nile Virus Information & Prevention

mosquito on human skinWest Nile Virus is a disease transmitted to humans by mosquitoes throughout Ontario. 

Most individuals bitten by an infected mosquito do not show any symptoms.

Of those who show symptoms, most will experience mild illness including headache, body ache, fever, nausea, vomiting and rash on chest, back or stomach. Very few (less than 1% of persons infected) develop serious symptoms including high fever, muscle weakness, stiff neck, severe headaches, numbness, confusion, tremors and a sudden sensitivity to light.

Public Health’s role in West Nile surveillance and prevention

Every mosquito season Public Health sets adult mosquito traps to check for the presence of West Nile Virus in our community.

Preventative plans are in place in the event West Nile Virus becomes established; see information on pesticides and larviciding below.

Please Note: Public Health no longer accepts dead bird submissions. 

  • If a dead bird is located on your property, please contact the Canadian Wildlife Health Cooperative (1-866-673-4781) to learn more about their surveillance and submission programs. 
  • If you wish to dispose of a dead bird, wear gloves, double-bag the bird, and place in an outdoor garbage disposal unit. Always wash your hands after contact with dead wildlife.

Guidelines for protecting you and your family from mosquito bites

Other Websites:

For more information contact