Lyme Disease: Be Vigilant About Ticks
Published May 7, 2026
Citizen informationLyme disease is on the rise in Quebec and poses a risk to people who work or take part in outdoor activities. It is caused by a bacterium transmitted through the bite of a blacklegged tick (Ixodes scapularis).
When and where is the risk present?
- As soon as temperatures reach 4°C and there is no snow on the ground
- In wooded areas, tall grass, leaf litter, and gardens
Symptoms to watch for
- A circular or bull’s-eye rash larger than 5 cm, appearing 3 to 30 days after a bite
- Fatigue, headaches, muscle and joint aches
- If untreated: joint swelling, facial paralysis, cardiac or neurological symptoms
Prevention
- Use an insect repellent containing DEET (30% or less) or icaridin (20% or less)
- Stay in the center of marked trails and avoid tall grass
- Inspect your body after outdoor activities
- Place clothing in a high-heat dryer after activities
If bitten by a tick
- Remove the tick as soon as possible
- Clean the bite area thoroughly
- Record the date, time, and location of the bite
- Call Info-Santé 811
✅ Antibiotic treatment is generally effective when Lyme disease is detected early.