A person has tested positive for West Nile virus in the Grey Bruce area.
The case was reported this week.
The health unit says a second positive equine case of the virus was also identified, and a mosquito pool in the region is the first to test positive for West Nile.
The trend is similar to what's happening across Ontario, as West Nile virus activity usually peaks in late summer and early fall.
Across the province, 370 positive mosquito pools have been found, and 37 human cases have been reported.
The virus is transmitted through the bite of an infected mosquito, and symptoms develop two to 14 days later.
About 80% of people bitten by a positive mosquito show no signs of it, and of the 20% who do, most are mild. They include fever, headache, body aches, fatigue, skin rash, and possible vomiting and nausea. Less than 1% of victims develop a severe illness affecting the central nervous system.
Reduce the risk by eliminating standing water, wear protective clothing, and use bug repellent especially at dawn and dusk.
