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Sask. heat triggers mosquitoes that carry West Nile Virus

Jun 26, 2015 | 1:56 PM

People in Saskatchewan are being reminded that as the hot weather sets in, so do mosquitoes that carry West Nile Virus.

Culex tarsalis mosquitoes are more active in hot weather, usually through mid-July to the end of August. 

Most people who contract West Nile Virus will have no symptoms, or only a mild fever, headache or body ache. However, there is a small chance that a person could contract West Nile Virus neuroinvasive disease which can lead to inflammation of the brain or even death.

“The majority of people who get West Nile Virus will not need medical attention and will improve on their own,” Saskatchewan’s deputy chief medical health officer Dr. Denise Werker said. “However, a patient should see a doctor immediately if they develop serious symptoms like a persistent fever, neck stiffness, severe headaches, confusion, seizures or paralysis.”

There have been 157 severe neurological cases and 17 deaths in Saskatchewan since 2003.

People can take steps to minimize their risk of exposure to West Nile Virus. That includes wearing mosquito spray, and wearing light coloured, loose fitting, long-sleeved tops and pants. It’s also a good idea to limit your time outdoors in the evening as Culex tarsalis are more active at dusk and at night.

Culex tarsalis lays its eggs on standing water, so people are advised to clean and empty containers in their yards that may collect water. The province also reminds people to make sure door and window screens fit tightly and are free of holes.

So far this summer, the ministry of health lists southern Saskatchewan as having a “low” risk of seeing people bitten by infected mosquitoes. More information can be found on the ministry’s website.

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