The Haldimand-Norfolk Health Unit confirms six human cases of West Nile in the area, including one reported death.
Their West Nile Virus Surveillance program shows five mosquito pools that are testing positive right now with two located in Cayuga and one in each in Simcoe, Dunnville, and Caledonia.
West Nile virus peaks in the late summer, with cases being reported into the autumn months.
It is expected that the virus will continue to pose a risk until temperatures are below freezing.
Most people infected will not have any symptoms, while others may experience flu-like symptoms such as fever, headache, and body aches.
Those with weakened immune systems are at higher risk of experiencing more severe health effects such as meningitis, encephalitis and acute flaccid paralysis.
If you experience any symptoms, the Health Unit recommends that you seek medical attention.