Toronto Public Health (TPH) has confirmed the city’s first case of West Nile virus in 2026, as an adult resident has tested positive for this mosquito-borne illness.
West Nile virus is spread through mosquito bites and is most commonly seen in Ontario during the summer months. This recent case serves as a reminder for residents to be vigilant in reducing their exposure to mosquitoes, especially during the active periods of dusk and dawn.
TPH is advising Torontonians to protect themselves against mosquito bites and eliminate breeding grounds by following some key preventive strategies:
Symptoms of West Nile virus usually manifest within two to 14 days after being bitten by an infected mosquito. Residents are advised to watch out for signs like fever, headache, nausea, body aches, skin rash, swollen lymph glands, and a stiff neck.
Health officials are stressing the importance for residents, particularly older adults and individuals with weakened immune systems, to take necessary precautions as mosquito activity peaks in late July and August.
