While the Manitoba government begins mosquito spraying in Winkler due to high West Nile virus risks, Portage la Prairie reports low mosquito counts and no current plans for spraying.
Paul Ziesmann, Superintendent of Public Works for the City of Portage La Prairie, says mosquito numbers in the area remain well below thresholds that would trigger control measures.
"Our mosquito trap numbers are extremely low. I just received them yesterday for the last week," he noted. "We need to see about 50 female mosquitoes in traps on a consistent two to three day basis." He adds, "We're really not finding any more than about 7 to 15 female mosquitoes on average on all of our traps. We really are nowhere near the threshold to do any sort of spraying this year as we speak today."
He mentions that changing weather could affect mosquito activity.
"Those things can change with precipitation, which we are receiving today."
Ziesmann’s update offers reassurance to Portage residents who may be concerned about West Nile virus exposure, especially given recent spraying efforts in southern Manitoba communities.
The city continues to monitor mosquito populations closely and advises residents to remain cautious during peak mosquito hours by using repellents and reducing outdoor exposure when possible.
Meanwhile, the Manitoba government has issued a ministerial order to begin spraying adult mosquitoes in the City of Winkler and surrounding communities, including Reinfeld, Chortitz and Schanzenfeld. Spraying is scheduled overnight Aug. 8–9 and Aug. 11–12, weather permitting, to address high numbers of Culex tarsalis mosquitoes infected with West Nile virus.
Public health officials note the risk of human exposure to West Nile virus is very high in Winkler and the surrounding areas, while no locally acquired human cases have been confirmed in Manitoba this year. Residents in those areas are urged to take precautions such as limiting outdoor activity during peak mosquito hours, using repellent, and eliminating standing water.
West Nile virus can cause serious illness, including encephalitis, which is swelling of the brain, and in some cases may lead to long-term complications or even death. It only takes one bite from an infected mosquito to contract the virus.
Because of these risks, health officials stress the importance of taking preventive measures to reduce mosquito bites and protect yourself and your family during peak mosquito season.
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