Ottawa residents are getting a timely reminder to cover up and bug-spray before heading outside this summer, after West Nile virus was detected in mosquito pools in several communities across Ontario.
What's happening
Health officials across the province have confirmed the virus showing up in surveillance testing as mosquito season hits its peak. West Nile virus is spread to humans through the bite of an infected mosquito, and while most people who get infected won't show any symptoms at all, it can occasionally lead to serious illness — especially in older adults or people with weakened immune systems.
Why this matters here
Ottawa's mix of wetlands, the Rideau Canal, and greenspace along the Ottawa River creates plenty of prime mosquito habitat, and Ottawa Public Health routinely monitors local mosquito populations for West Nile virus every summer as part of its seasonal surveillance program. With warm, humid weather sticking around and standing water common after summer storms, conditions in the capital right now are exactly the kind that let mosquito populations — and virus transmission risk — climb.
Ottawa has seen confirmed human cases of West Nile virus in past summers, so this isn't a hypothetical risk for the city — it's a recurring seasonal concern that tends to peak from July through September.
How to protect yourself
Health officials recommend a few simple precautions:
- Use insect repellent containing DEET or icaridin when spending time outdoors, particularly at dawn and dusk when mosquitoes are most active
- Wear long sleeves and pants in areas with heavy vegetation or standing water, like along the Greenbelt or canal pathways
- Get rid of standing water around your home — items like clogged eavestroughs, plant saucers, and old tires are common mosquito breeding grounds
- Repair window and door screens to keep mosquitoes out of your home
- Keep an eye on symptoms, which can include fever, headache, body aches, and fatigue, and can appear anywhere from a few days to two weeks after a bite
The bigger picture
Most people infected with West Nile virus never feel sick, and those who do typically recover fully. But severe cases — while rare — can involve neurological complications, so health officials say prevention is still worth the effort, particularly for seniors and anyone who's immunocompromised.
With Ottawa's summer far from over, taking a few basic precautions before your next walk along the canal or evening in the backyard is an easy way to cut down the risk.
Source: Global News Ottawa
