The Perth County Health Unit says the tests on mosquitoes in a trap in the northeastern part of Mitchell came back positive for the virus.
Trapping and testing of mosquitoes in Perth County began in June.More news: War unlikely between India and China, says Dalai Lama
Public Health Inspector Stephanie Carlisle says this is usually the time of year the area sees positive tests.
The district has found the presence of West Nile in 34 of 3,981 samplings of mosquitos in the parish, the release said. Roadside catch basins in Stratford, St. Marys, Listowel, and Mitchell have had one round of larvicide applied, with a second round slated for early this month, officials said.
The Collin County Health Department has confirmed the county's first case of human West Nile Virus this summer. "During July-September, arboviral transmission of West Nile Virus increases dramatically".More news: Pastor Says God Gives Trump 'Authority to Take Out Kim Jong Un'
Symptoms for West Nile virus include fever, headache and body aches, and more serious symptoms include encephalitis, meningitis and death, according to the release.
People older than 50 are most at risk for WNV infection as are those with weakened immune systems.More news: Expert reacts to latest North Korean threat of Guam attack
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