More West Nile virus positive mosquitoes found in Halton Region

A batch of mosquitoes collected last week in Burlington has tested positive for West Nile virus (WNV). This is the first batch of positive mosquitoes found in the City of Burlington and the third batch in Halton Region this year. The mosquitoes were collected from the area of Guelph Line and New Street. The other two batches of positive mosquitoes were collected within the Town of Oakville.

“Our comprehensive West Nile virus surveillance program is once again helping to show the distribution of West Nile virus positive mosquitoes in Halton Region,” said Dr. Bob Nosal, Halton Region Medical Officer of Health. “Until the heavy frosts of the fall months, the threat of West Nile virus to humans is likely to continue. It is important for Halton residents to keep taking precautions to prevent exposure to mosquito bites at least throughout the month of September.”

Mosquitoes can transmit WNV to humans after feeding on birds infected with the virus. The following are steps that residents can take to protect themselves and their families from mosquitoes:

• Cover up. Wear light-coloured, long-sleeved shirts and pants with tightly-woven fabric.
• Avoid being outdoors in the early evening to morning. This is when mosquitoes are most active and likely to bite, as well as at any time in shady, wooded areas.
• Reduce mosquito breeding sites around your home by getting rid of all water-filled containers and objects. Change the water in bird baths at least once per week.
• Use an approved insect repellent, such as one containing DEET.

Maps showing the locations of positive mosquito pools, as well as standing water sites that have had larvicide applied are available on the Health Department’s website at www.halton.ca/wnv.

To report standing water or for more information about West Nile virus, please dial 311 or call Halton Region at 905-825-6000, toll free 1-866-4HALTON (1-866-442-5866), TTY 905-827-9833 or e-mail wnv@halton.ca.

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