Local mosquito batches test positive for WNV Two of the nine mosquitoes batches that tested positive for West Nile virus (WNV) this week are located in Georgetown. Halton Region Health Department employees trapped the mosquitoes last week. This is the first time WNV positive mosquitoes have been found in Halton Hills this season. The other positive tests were found in Oakville (six batches), and Milton (one). Previous tests have shown positive WNV results in dead birds found in Oakville and Burlington. WNV has now been detected in all four municipalities in Halton. "The virus is going to continue to build in the mosquito population until the end of the season," said Dr. Bob Nosal, Medical Officer of Health for Halton Region. "Therefore, the likelihood of mosquitoes passing on the virus to humans is increasing." This year to date, no human cases of WNV have been found in Halton. The risk of serious illness from WNV increases with increasing age. The Halton Region Health Department is advising Halton residents, especially older adults and elderly persons, to protect themselves against mosquito bites to reduce the risk of becoming infected with West Nile virus. From now until late September is the highest risk period for infection. To protect yourself from WNV: · 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. · Use an approved insect repellent, such as one containing DEET. In 2003, a local study found that 80 per cent of people who had become infected with the virus had no symptoms. However, roughly 20 per cent of people infected developed fever, headache, muscle aches, and rash. And, 1 per cent of those infected became seriously ill with a neurological syndrome, which can include encephalitis (swelling of the brain), paralysis and difficulty with speech. The infection can be fatal in rare situations. If you have symptoms of WNV, consult your physician. Mosquitoes breed in stagnant water. To reduce mosquito breeding sites around your home: · Drain any areas of standing water. · Change the water in birdbaths and empty rain barrels weekly. · Remove old tires and turn over pails, toys, and wheelbarrows. · Keep eavestroughs clear. Information about WNV, as well as a map showing locations of WNV activity found in Halton, is available on Halton's website at www.halton.ca/wnv To report a dead bird or standing water, call Halton Region, 1-8664HALTON (1-866-442-5866), TTY 905-827-9833.