West Nile virus has been found in mosquito pools across several communities in Ontario, health officials report. The detection comes as summer reaches its peak, a time when mosquito activity is highest. Officials are reminding residents to take steps to protect themselves from bites.
West Nile virus is a mosquito-borne illness that can cause mild to severe symptoms. Most people infected do not develop any symptoms, but some may experience fever, headache, body aches, or a skin rash. In rare cases, the virus can cause serious neurological conditions such as encephalitis or meningitis. Older adults and those with weakened immune systems are at higher risk for severe illness.
The virus is spread through the bite of an infected mosquito. Mosquitoes become infected by feeding on birds that carry the virus. There is no vaccine for West Nile virus, and treatment focuses on relieving symptoms.
To reduce the risk, health officials recommend using EPA-approved insect repellent, wearing long-sleeved shirts and long pants when outdoors, especially at dawn and dusk when mosquitoes are most active, and removing standing water around homes where mosquitoes breed. Ensuring window screens are intact also helps keep mosquitoes out.
While the presence of the virus in mosquitoes does not guarantee human infections, it serves as a reminder to remain vigilant. By taking simple precautions, people can significantly lower their chances of being bitten.