The spray itself is very low in toxicity, according to a news release from the health department, and should not affect or harm local mammals, or even non-target insects.
On Monday, the county notified the town that a Glenwick Estates resident was diagnosed with West Nile Fever, the news release said.
The best way for people to protect themselves against West Nile is to minimize their risk of mosquito bites by doing things like wearing light-coloured clothing and long-sleeved shirts, and using mosquito repellents containing DEET or icaridin. The individual may have been bitten in another location, so the is conducting additional trapping to help determine if infected mosquitoes are in the area. Mosquitoes acquire the virus by feeding on infected birds.
The EOHU is confirming the summer's second human case of West Nile virus in the region.
There have been 24 reported human cases of West Nile Virus that were either confirmed or probable, according to Public Health Ontario's website.
Most people infected don't get sick, and those who do usually experience mild symptoms.
Health officials say the infection rate is moderate this year. In 2006, 4,269 confirmed human WNV cases were reported nationally to the Centers for Disease Control and Prevention; California reported 278 cases.