Human cases of West Nile virus confirmed in Waterloo Region

Local health officials want the public to take precautions as West Nile virus has been detected in Waterloo Region.

Region of Waterloo Public Health confirmed two locally acquired human cases of the virus. They’re the first local cases to be reported since 2018.

West Nile virus spreads through infected mosquitoes and public health said the risk won’t go away until the summer heat does.

“The hot summer temperatures and increased levels of rain over the last few months have created the favourable conditions for West Nile virus in our region and other areas across the province,” Dr. Rabia Bana, Associate Medical Officer of Health, said in a release. “While we await cooler fall temperatures and the first frost, residents should continue to take precautions to protect themselves from mosquito bites when enjoying outdoor activities. In addition, be sure to look around your property and remove standing water sources where mosquitos can breed.”

Most people who become infected with West Nile virus do not show symptons, although others may experience things like mild fever, headache, muscle aches and skin rash.

Less than one per cent of human cases lead to severe symptoms, which require medical attention.

You can help protect yourself by putting screens on all your windows, avoid spending time outside at dusk and dawn, and eliminate mosquito breeding grounds on your property.

You can find more protection tips by clicking here.

The West Nile news comes just a few days after Region of Waterloo Public Health confirmed the first two local cases of influenza for the 2024-2025 flu season.