WNv is a mosquito-borne virus that can cause illness, including in rare cases, encephalitis (inflammation of the brain). WNv can be spread to humans by the bite of an infected mosquito. Mosquitoes become carriers of the virus when they feed on infected birds. Human infections from the virus are rare and those affected usually experience only mild symptoms such as fever or headaches. The illness can be serious and inflammation of the brain (encephalitis) can occur in a small number of cases.
In previous years WNv has been confirmed in Simcoe Muskoka. Anyone who lives in an area where there are mosquitoes infected with WNv may be at risk of acquiring this illness. WNv is spread to humans by the bite of an infected mosquito. This makes it important that you and your family take precautions to reduce the chances of being bitten by a mosquito.
Flu-like symptoms begin in humans, about three to 14 days after a bite from an infected mosquito. Although most people will not become sick if bitten by an infected mosquito, WNv can cause severe illness in some people. Those at greatest risk of severe illness are people over the age of 50 and people with chronic diseases or weakened immune systems. If you have any of the following symptoms: fever, muscle weakness, stiff neck, confusion, severe headache, or sudden sensitivity to light, consult a doctor. These may be early symptoms of WNv illness or of other illnesses that would require medical attention.
Personal Protection
Reducing Mosquito Breeding Sites
