To date, in Ontario, there have been seven reported human cases of West Nile virus and 113 positive mosquito pools identified from 21 different health units.
"These are the first confirmed indications of local West Nile virus activity this year", Dr. Michael Stacey, deputy health officer for the county said in a news release. St. Louis seemed to disappear after West Nile became the dominant virus, but it has reappeared in some counties in the last two or three years, Heft said.
Mosquitoes carrying the West Nile virus have now been found in 12 CT communities, from the southwestern corner of the state to towns in north central and far eastern portions of CT, officials said Wednesday.
Most people (about four in five) infected with the West Nile Virus will not develop any symptoms. The mosquitoes that carry the virus are typically out from dusk to dawn.
Starting in June, that state has been testing mosquitoes for not just West Nile, but also Eastern Equine Encephalities, Jamestown Canyon Virus and Zika virus.
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No human or horse cases have been reported with WNV-associated illnesses acquired in CT this season.
Drain standing water around your home, such as bird baths or pet dishes. The elderly and people with poor immune systems are at higher risk for serious illness which can lead to hospitalization, disability or even death.
If you are outdoors between dusk and dawn when mosquitoes are most active, be sure to wear long trousers, a long-sleeved shirt, shoes and socks.
Twenty-eight states have reported more than 200 combined human West Nile virus cases so far in 2017, the Centers for Disease Control and Prevention reports.
Install or fix screens on windows and doors to keep mosquitoes out of your home.