Toronto’s tick surveillance program monitors the number of blacklegged ticks, their locations, and the number of them that carry the bacteria that causes Lyme disease. This information helps to determine the overall risk of Lyme disease in Toronto.

The tick surveillance program consists of ticks brought in by the public and ticks found by dragging.

Tick dragging is a process of collecting ticks in the environment and is done in the spring and fall when adult ticks are active. Dragging locations are selected based on suitable blacklegged tick habitat or a previous confirmed finding of a blacklegged tick. Blacklegged ticks may still be present in very low numbers at a site where none were found by tick dragging efforts.

Active Tick Surveillance Map

Tick dragging locations and results are available on the active tick surveillance map. Please note: the technology to convert this map to an accessible format is not currently available. These maps may not be compatible with screen reader software. If you are unable to access this map, please contact Eastyorkoffice@toronto.ca.

The map will be updated in the spring and fall when tick dragging is completed and laboratory results are received from the National Microbiology Laboratory. Because blacklegged ticks are known to be established at Algonquin Island, Highland Creek, Morningside Park, Toronto Hunt Club and Rouge Valley Park, Toronto Public Health will continue to monitor numbers and infectivity rates at these locations less frequently. Tick dragging results from 2013 to 2017 are also listed below.

Ticks are found in wooded or bushy areas with lots of leaves on the ground or where there are tall grasses. As tick populations are expanding, it is possible that blacklegged ticks could be present outside the areas identified by Toronto Public Health. In addition, ticks can travel or migrate on the bodies of animals such as birds, and therefore can be present in an area for a year in very low numbers and then disappear.

 

Park Locations Results
Algonquin Island Two blacklegged ticks found, both tested negative for Borrelia burgdoferi.
Anewen Greenbelt Two blacklegged tick larvae found, larvae Borrelia burgdorferi testing not applicable.
Bloordale Park No ticks found
Cedar Ridge Park No ticks found
Charles Sauriol Conservation Area No ticks found
Cherry Beach Sports Field No ticks found
Colonel Danforth Trail Five blacklegged ticks found, all tested negative for Borrelia burgdoferi.
Cudia Park No ticks found
David A. Balfour Park No ticks found
Doris McCarthy Trail One blacklegged tick found and tested negative for Borrelia burgdoferi
Earl Bales Park No ticks found
Etienne Brule Park No ticks found
Etobicoke Creek No ticks found
Etobicoke Valley Park No ticks found
Finch Hydro Corridor No ticks found
G. Ross Lord Park No ticks found
Guild Park No ticks found
High Park No ticks found
Highland Creek Three blacklegged ticks found, one tested positive and two tested negative for Borrelia burgdorferi.

Nine blacklegged tick larvae found, Borrelia burgdorferi testing not applicable for larvae.

Humber Woods Park No ticks found
Iroquois Park No ticks found
Lambton Park/Lambton Woods No ticks found
Manhattan Park – Massey Creek No ticks found
Martin Goodman Trail No ticks found
Morningside Park 14 blacklegged ticks found, one tested positive and 13 tested negative for Borrelia burgdoferi.
Northwood Park No ticks found
Pine Point Park One blacklegged tick found,  tested negative for Borrelia burgdoferi.
Rennie Park No ticks found
Riverdale Park East No ticks found
Rouge Valley Park 122 blacklegged ticks found, 63 tested positive and 59 tested negative for Borrelia burgdoferi.
Rowntree Mills Park No ticks found
Sherwood Park No ticks found
 Summerlea Park No ticks found
 Sunnybrook Park No ticks found
 Sylvan Park No ticks found
 Tommy Thompson Park No ticks found
 Toronto Hunt Club Two blacklegged ticks found, both tested negative for Borrelia burgdoferi.
West Dean Park No ticks found

 

Park Location Results
Algonquin Island Park Eight blacklegged ticks found, all tested negative for Borrelia burgdorferi.
Bickford Park No ticks found
Bloordale Park No ticks found
Brimley Woods Park No ticks found
Cedar Ridge Park One blacklegged tick found and tested negative for Borrelia burgdorferi.
Centre Island No ticks found
Charles Sauriol Conservation Area No ticks found
Colonel Danforth Trail Eight blacklegged ticks found, one tested positive and seven tested negative for Borrelia burgdorferi.
Cudia Park No ticks found
David A. Balfour Park No ticks found
Eglinton Park No ticks found
Etienne Brule Park No ticks found
Etobicoke Creek No ticks found
Etobicoke Valley Park No ticks found
Finch Hydro Corridor No ticks found
Glen Stewart Park No ticks found
Hanlan’s Point No ticks found
High Park No ticks found
Humberwoods Park No ticks found
Iroquois Park No ticks found
Joyce Trimmer Park No ticks found
June Rowlands Park No ticks found
Morningside Park 14 blacklegged ticks found, all tested negative for Borrelia burgdorferi.
Northwood Park No ticks found
Pine Point Park No ticks found
Rennie Park No ticks found
Riverdale Park East No ticks found
Rouge Valley Park 63 blacklegged ticks found,  29 tested positive and 34 tested negative for Borrelia burgdorferi.
Rowntree Mills Park One blacklegged tick found, and tested negative for Borrelia burgdorferi.
Summerlea Park No ticks found
Sunnybrook Park No ticks found
Sylvan Park No ticks found
Tommy Thompson Park No ticks found
Toronto Hunt Club No ticks found
Wards Island No ticks found
West Dean Park No ticks found

 

Park Location Results
Algonquin Island Two blacklegged ticks found, both tested negative for Borrelia burgdorferi.
Bob Hunter Park No ticks found
Brimley Woods Park No ticks found
Cedar Ridge Park One blacklegged tick found, and tested negative for Borrelia burgdorferi.
Centre Island No ticks found
Charles Sauriol Conservation Area No ticks found
Cudia Park No ticks found
Etobicoke Creek No ticks found
Greenvale Park No ticks found
Grey Abbey Park No ticks found
Guildwood Park No ticks found
Hanlan’s Point No ticks found
Humber River No ticks found
Joyce Trimmer Park No ticks found
Lavender Creek No ticks found
Leslie Grove Park No ticks found
Milkman’s Lane No ticks found
Morningside Park Four blacklegged ticks found, all tested negative for Borrelia burgdorferi.
Panorama Park No ticks found
Pine Point Park No ticks found
Rouge Park 10 blacklegged ticks found, one tested positive and nine tested negative for Borrelia burgdorferi.
Rowntree Mills Park No ticks found
South Marine Drive Park No ticks found
Sunnybrook Park No ticks found
Sylvan Park No ticks found
Tommy Thompson Park No ticks found
Wards Island No ticks found

Park Location Results
Algonquin Island No ticks found
Danforth Birchmount Parkette No ticks found
Rouge Valley Three blacklegged ticks found, all tested negative for Borrelia burgdoferi.
Wards Island No ticks found

Park Location Results
Algonquin Island One blacklegged tick found, and tested negative for Borrelia burgdorferi.