West Nile Virus Detected in First Vaughan Mosquito Trap of Summer

Vaughan, ON – Public health officials have confirmed the first positive West Nile virus (WNV) finding of the season in a mosquito trap located in Vaughan. This revelation marks the initial detection of the virus in york Region for the summer.York Region Public Health actively monitors WNV activity through a network of mosquito traps and subsequent testing. The recently identified positive trap was situated in the vicinity of Weston and Rutherford Roads.

West Nile virus is transmitted to humans through the bite of an infected mosquito. To safeguard residents and their families, health authorities are reinforcing preventative measures against mosquito bites and potential WNV transmission.

key Protection Strategies:

Eliminate Breeding Grounds: residents are urged to meticulously clear stagnant water from their properties.Common culprits include bird baths, flowerpots, swimming pool covers, and clogged eavestroughs, all of which provide ideal breeding conditions for mosquitoes.
Secure Homes: Ensuring window screens are tightly fitted and in good repair is crucial for preventing mosquitoes from entering living spaces.
* Cover Up Outdoors: when spending time outside, it is indeed recommended to utilize insect repellent containing DEET or Icaridin, following label instructions. Wearing light-coloured, protective clothing, such as long-sleeved shirts and pants, further minimizes exposed skin.York Region’s thorough 2025 west Nile virus control plan involves public education on self-protection, investigation of any human cases, and ongoing mosquito surveillance. The region also employs larvicides in catch basins and other stagnant public water sources, including roadside ditches, to curb mosquito populations.for further information on West Nile virus, including symptoms and detailed protective measures, residents can access the informative “Fight the bite” video online. Additional resources and contact information for York Region Health Connection are available at york.ca/WestNile.

What actions should residents take if they experiance severe West Nile Virus symptoms?

West Nile Virus Detected in York Region Mosquito Trap – first Case of Summer

York Region Public Health has confirmed the first case of West Nile Virus (WNV) detected in a mosquito trap this summer, raising awareness and prompting preventative measures for residents. This initial finding underscores the importance of ongoing mosquito control and personal protection strategies.

Understanding West Nile Virus

West Nile Virus is a mosquito-borne illness transmitted to humans through the bite of an infected mosquito. While most individuals infected with WNV experience no symptoms or mild, flu-like symptoms, a small percentage can develop severe neurological illness.

Symptoms of West Nile Virus

recognizing the symptoms of West Nile Virus is crucial for early detection and management. Symptoms typically appear between two to fifteen days after the bite of an infected mosquito.

Mild symptoms (80% of cases):

Fever

Headache

Body aches

Skin rash

Fatigue

Severe Symptoms (Less than 1% of cases):

stiff neck

Confusion

Muscle weakness

Vision loss

Encephalitis (inflammation of the brain)

Meningitis (inflammation of the membranes surrounding the brain and spinal cord)

use Insect Repellent: Apply insect repellent containing DEET, icaridin, or oil of lemon eucalyptus to exposed skin and clothing. Follow the manufacturer’s instructions carefully.

Wear Protective Clothing: When outdoors, wear long-sleeved shirts, long pants, and socks, especially during dawn and dusk when mosquitoes are most active.

Eliminate Standing Water: Mosquitoes breed in standing water. Regularly empty and clean items that collect water, such as:

Flower pots

Bird baths

Gutters

Old tires

Children’s toys

Screen Windows and Doors: Ensure that windows and doors have tight-fitting screens to keep mosquitoes out of your home.

Mosquito Dunks: Use mosquito dunks in birdbaths and other standing water sources that cannot be emptied. These contain Bacillus thuringiensis israelensis (Bti), a naturally occurring bacterium that kills mosquito larvae.

Individuals over 50 years of age

People with weakened immune systems

individuals with chronic medical conditions (e.g., diabetes, heart disease, kidney disease)

These individuals should take extra precautions to avoid mosquito bites and seek medical attention promptly if they develop symptoms.

Past West Nile Virus Activity in ontario

Ontario has experienced West Nile Virus outbreaks in the past, with varying levels of activity each year. The WDR (Westdeutscher Rundfunk) provides general health information that can be useful in understanding public health responses to viral outbreaks, although it doesn’t directly report on Ontario-specific WNV data. https://www1.wdr.de/index.html

2002: First confirmed cases of WNV in Ontario.

2007: Significant outbreak with numerous cases of severe illness.

* Recent Years: Fluctuations in case numbers, with ongoing surveillance and control efforts.

Monitoring historical trends helps public health officials anticipate and prepare for potential outbreaks.

Reporting Mosquito Breeding Sites

Residents of York Region can report mosquito breeding sites to Public Health. This information helps target larviciding efforts and reduce mosquito populations. Contact York Region Public Health for details on how to report.