For the first time this summer, mosquitoes have tested positive for West Nile Virus (WNV) in Lambton County.
Lambton Public Health (LPH) said the bugs were collected from a trap in Corunna during regular surveillance on August 27.
LPH said no positive human cases of West Nile have been confirmed to date in the county.
According to Public Health Ontario, there have been 21 reported human cases of West Nile Virus across the province thus far in 2025.
West Nile Virus is spread to humans through the bite of an infected mosquito and most people who are infected don't get sick. Those who do become ill usually experience mild flu-like symptoms such as fever, headache, skin rash, or muscle aches. Fewer than one percent of people infected with the virus become seriously ill.
LPH said residents can reduce the risk of being bitten by mosquitoes by taking the following precautions:
• Avoid areas with high mosquito populations.
• Take extra precautions from dusk to dawn when mosquito activity is high
• Wear protective, light-coloured clothing
• Use repellants containing DEET or Icaridin
• Drain areas of standing or stagnant water on your property
• Remove old tires; turn over pails, toys, and wheelbarrows
• Change water in bird baths (at least weekly)
• Keep eaves clear to avoid trapped water
For more information, contact the West Nile Virus information line at 519-383-3824.
You can also visit Lambton Public Health's website.
