LAMBTON COUNTY, ONT. -- Health officials say someone in Lambton County has tested positive for the West Nile Virus - the first confirmed human case in the region this year.

Lambton Public Health says mosquito pools in Petrolia and Oil Springs tested positive for the virus last month.

The agency says the virus is spread to humans through the bite of an infected mosquito.

It says 24 human cases have been reported in Ontario this year so far.

The health unit says the confirmed human case is a reminder for those in the county to stay vigilant when it comes to exposure to mosquitoes.

It says despite lower nighttime temperatures, the mosquito season isn't over until frost prevents the insects from breeding.

(The Canadian Press)