Ticks & Lyme Disease

Please note, Public Health is not accepting drop-off tick submissions for identification at this time. Instead, take a photo of the tick and submit it to PHI.Intake@wdgpublichealth.ca or eTick for identification. Public Health is not able to send Blacklegged ticks to Health Canada for testing at this time due to COVID-19 response. If you have any questions or for more information, please call us at 519-822-2715 ext. 4753.

Lyme disease is a serious illness caused by bacteria that are spread through the bite of an infected blacklegged tick (also known as a deer tick). If you think you have been bitten by a tick and are concerned, contact your healthcare provider. If possible, keep the tick, take a photo and submit it to PHI.Intake@wdgpublichealth.ca or eTick for identification.

Ticks are usually found in woody or bushy areas but because they can be carried by birds it is possible to encounter them just about anywhere. Ticks do not jump, fly or move very quickly, but will wait on low-growing vegetation and easily latch onto people and pets that brush against them.

It is possible to find an infected tick almost anywhere in Ontario. The southern part of Wellington County (Puslinch) has been identified by active surveillance (tick dragging) as a high-risk area.

A tick must be actively feeding to spread bacteria, including the bacteria that cause Lyme disease. Lyme disease may be prevented through the use of antibiotics if detected soon enough. Contact your healthcare provider if you are concerned.

This map (PDF) shows risk areas where blacklegged ticks are established.

How to prevent ticks bites and Lyme disease

What to do if you find a tick attached to your skin

If you’ve been bitten by a tick, remove it carefully using tweezers following these instructions or a tick remover. Remove it as soon as possible. Removing ticks within 24 hours reduces the risk of infection. Submit the tick to PHI.Intake@wdgpublichealth.ca or eTick for identification.


  • Flick or scratch an attached tick
  • Use petroleum jelly, heat or nail polish to remove a tick (these take too long to work)
  • Remove a tick while holding it around the middle (abdomen)
  • Burn an attached tick

These methods increase the chance of forcing harmful microorganisms out of the tick and into your bloodstream.


Images of Blacklegged ticks at various stages including larva, nymph, adult male and female. Includes enlarged views and approximate size view.