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Prevent West Nile Virus: Fight the bite
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Summer is here, and that means a return of the West Nile virus.
Reduce your risk of getting sick from West Nile by avoiding the bite of mosquitoes that can spread the virus.
What is West Nile virus?
West Nile is a virus that arrived in Canada in 2001. West Nile is mainly spread to people by the bite of mosquitoes, which become infected by feeding on an infected bird. While most people who get West Nile do not get sick, approximately one in 150 people infected will experience serious symptoms. These include high fever, severe headache, muscle weakness, stiff neck, confusion, tremours, numbness and sudden sensitivity to light. In rare cases, West Nile virus can cause swelling of the brain or death. Anyone who suspects they have West Nile virus should seek immediate medical attention.
How do I prevent West Nile virus?
Cover Up.
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Cover up when outside (Hint: This is especially important between dusk and dawn when mosquitoes are most active).
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Use federally-registered personal insect repellents on exposed skin, such as products containing DEET.
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Details on DEET
• The concentration of DEET should be no greater than 30% for adults and no greater than 10% for children.
• DEET-based repellents can also be used on top of clothing. Do not use it under clothing.
• Several DEET-free botanical repellents are federally registered but provide a shorter time of effectiveness. If you are going outdoors for less than 30 minutes, these are safe, effective alternatives.
- Ontario Ministry of Health and Long-Term Care
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When the weather permits, wear protective clothing outside such as long-sleeved shirts, jackets, long pants, hats and socks (Hint: Choose light-coloured clothing because mosquitoes tend to be attracted to darker colours).
Clean Up

Remove potential mosquito breeding areas around your property by:
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Getting rid of standing water that mosquitoes need to lay their eggs. (Hint: Water collects in all sorts of places, including pool covers, flower pots, wheelbarrows, recycling boxes, garbage cans, old tires and wading pools).
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Fill in low depressions in your lawn.
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Cover rain barrels with a fine screen mesh.
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Change water in bird baths at least once a week.
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Clean out dense bush and shrubbery where mosquitoes can rest.
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Turn over your compost pile on a regular basis.
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Organize a community cleanup to reduce mosquito breeding areas in your neighbourhood.
Change in West Nile Virus Surveillance for 2009
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Dead birds are no longer tested for the West Nile virus, a decision made by the Ontario Ministry of Health and Long-Term Care. In the past, dead birds were a good indicator of West Nile virus activity in Ontario. However now that West Nile virus is here to stay in Ontario, tracking dead birds is no longer deemed necessary.
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If you find a dead bird on your property, dispose of it by wearing gloves or using a shovel to pick up the carcass, and then putting it into a double bag for disposal in your regular garbage pickup. Wash your hands thoroughly after handling any dead animal. Remember: you cannot get West Nile virus by handling a dead bird.
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If you want to report a dead bird, you can contact the Canadian Cooperative Wildlife Service directly at 1-866-673-4781. The Wildlife Service will determine if the specimen is suitable for testing.
News Releases
Links
For more information on preventing West Nile virus, contact your local Health Unit office or call toll-free 1-866-888-4577. For additional West Nile Virus resources, visit:
May 6, 2009
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