The first human case of West Nile virus in Waterloo region this year has been confirmed.
Public health reported the case Oct. 2 and is reminding residents to protect themselves from mosquito bites, even as temperatures cool.
“Residents should continue to protect themselves from mosquito bites until we experience the first frost,” said Dr. Rabia Bana, associate medical officer of health.
Most people infected with West Nile virus do not have symptoms. Those who do may develop a fever, headache, muscle aches, stiff neck, swollen glands or a rash within two to 15 days of being bitten.
Less than one per cent of infected people develop more serious symptoms.
Residents can lower their risk by using insect repellent, wearing long sleeves and pants, avoiding mosquitoes at dawn and dusk, and removing standing water from their property.
Public health also advises people not to handle sick or dead birds, which can carry the virus.
Waterloo region reported three human cases of West Nile virus in 2025.
