The Regional Municipality Of York


Mosquitoes in York Region test positive for West Nile virus

Newmarket – The Regional Municipality of York monitors West Nile virus activity by setting mosquito traps throughout the Region and testing for West Nile virus. To date, one mosquito trap in the Town of Richmond Hill at Leslie Street and Major Mackenzie Drive East has tested positive for West Nile virus.

“West Nile virus is passed to humans through the bite of an infected mosquito and can cause serious illness,” said Dr. Karim Kurji, York Region’s Medical Officer of Health. “Although the chance of being bitten by an infected mosquito is rare, residents are advised to take precautions when outside in the early morning and evening to prevent mosquito bites and reduce the chance of getting West Nile virus.”

To protect yourself and family from West Nile virus follow these simple steps:

Get rid of mosquito-friendly areas at home

  • Clean up stagnant water found in bird baths, flower pots, swimming pool covers, clogged eavestroughs
  • Ensure the window screens on your home are tight-fitting and in good repair

Cover up while outside

  • Use insect repellent containing DEET or icaridin – Check the label directions for use
  • Wear protective clothing, including socks, long-sleeved shirts and jackets
  • Dress in lighter colours as mosquitoes are attracted to darker colours
  • Minimize outdoor activities at dusk and dawn when mosquitoes are most active

York Region’s 2018 West Nile virus control plan includes educating residents on self-protection, investigating human cases, conducting surveillance and treating catch basins.

York Region Public Health uses larvicides in catch basins to control mosquito breeding along Regional and municipal roads and other stagnant public water sources, including roadside ditches. Private backyard catch basins are treated upon request.

To review the current status of West Nile virus in Ontario, visit:

For more information on West Nile virus, please contact York Region Health Connection at 1-800-361-5653 or TTY 1-866-512-6228 or visit

The Regional Municipality of York consists of nine local cities and towns and provides a variety of programs and services to 1.2 million residents and 51,000 businesses with 620,000 employees. More information about the Region’s key service areas is available at


Media Contact:

Patrick Kasebzarif, Community and Health Services, The Regional Municipality of York
Phone: 1-877-464-9675, ext. 72160 Cell: 289-231-5684

Mosquitoes; York Region; West Nile Virus; test; The Regional Municipality of York en-US Media Release