Less than 1% of individuals develop serious or life-threatening symptoms. Cases in Ontario are monitored closely. We keep track of infected mosquito samples to assess risk.
West Nile Virus
Mosquitoes can carry West Nile virus, which may cause symptoms like fever, headaches, or body aches. While severe cases are rare, it’s important to know how to protect yourself and your family.
Recent West Nile virus findings
We set up traps and test mosquito samples from different areas in Elgin County, Oxford County, and the City of St. Thomas to check for West Nile virus. Here are the recent positive results:
Date | Location |
August 12, 2024 | Woodstock |
August 5, 2024 | Aylmer |
July 29, 2024 | Aylmer |
September 11, 2023 | Tavistock |
September 5, 2023 | Drumbo |
August 14, 2023 | Woodstock |
Protect yourself from mosquito bites
Prevent mosquito bites with these simple steps:
When outdoors:
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Use bug spray and always read and follow the label
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Wear long sleeves, long pants, and light-coloured clothing
Around your home:
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Get rid of standing water in birdbaths, plant pots, and barrels
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Clean gutters and drains regularly
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Trim shrubs and bushes to prevent mosquitoes from hiding
What to do if you find a dead bird
If you find a dead bird, you can help track West Nile virus:
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Report it to the Canadian Wildlife Health Cooperative
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Follow their advice for safe handling and disposal
Note: We do not collect dead birds at the health unit, but reporting them helps track diseases.
Frequently asked questions
Is West Nile virus common in southwestern Ontario?
Can I get tested for West Nile virus?
If you’re feeling unwell after a mosquito bite, contact your health care provider. They can advise if testing or treatment is needed.
What should I do if I’m bitten by a mosquito?
Most mosquito bites don’t cause illness. Watch for symptoms like fever or aches. If you feel unwell, contact your doctor.
Contact Us
Southwestern Public Health (8:30 a.m. - 4:30 p.m., Monday - Friday)
St. Thomas Site
(Administrative office)
1230 Talbot Street
St. Thomas, ON N5P 1G9
Woodstock Site
410 Buller Street
Woodstock, ON N4S 4N2
Call us toll free: 1-800-922-0096
Email us
Work with Us
Southwestern Public Health (SWPH) values our people! We pride ourselves on our positive and flexible work environment.