News Release                   For Immediate Release

July 29, 2005

First Human Probable Positive for West Nile Virus in Ontario This Year

Initial tests indicate that a resident of Owen Sound has contacted West Nile Virus.   This is the first probable human case identified in Ontario this year. Medical officer of Health Dr. Hazel Lynn says “We have not identified any birds or mosquitoes  positive for West Nile Virus in Grey Bruce this year however, it appears that there are some positive mosquitoes in our area.”  She adds, “While the risk of becoming seriously ill is low, avoiding mosquito bites is warranted.”

West Nile Virus is spread to humans through the bite of an infected mosquito. Mosquitoes get the virus by feeding on infected birds. Most people who are infected have no symptoms at all or have a mild illness such as fever, headache, muscle weakness or body aches. People over age 50 are more at risk of developing encephalitis (swelling of the brain).

When mosquitoes are active (dusk to dawn), residents should take the following steps:

• Wear light-coloured clothing, long-sleeved shirts, pants and socks.
   

• Use an insect repellent containing DEET when outdoors. Be sure to follow the directions for its use, especially for children.
   

• Prevent mosquito-breeding sites by getting rid of standing water once a week in places such as bird baths, old tires and children’s toys.
   

• Repair any doors or window screens where mosquitoes could enter the home.

If you find a dead crow please contact your local Public Health Unit.  For more information on West Nile Virus visit the Public Health web site at www.publichealthgreybruce.on.ca.

For more information:

Hazel Lynn

Medical Officer of Health

Grey Bruce Health Unit

376-9420 ext. 241