In just 6 years (2009-2015), cases of Lyme disease in Ontario increased from around 30 cases per year, to more than 300.13
Climate change has contributed to the spread of the tick that transmits Lyme disease.14
The best way to prevent Lyme disease is to avoid being bitten by a tick. Follow these tips when heading outside in areas where ticks can be found:
The identification of Lyme disease in its early stages is very important. In most cases, if caught early, Lyme disease can be treated effectively with antibiotics. Symptoms typically occur 3 to 30 days after you’ve been bitten. They can differ from person to person and could include any of the following:
More severe symptoms (experienced weeks to months after a tick bite, if untreated) could include but are not limited to:
Contact a health professional if you’re not feeling well or are concerned after being bitten by a tick.
Source: Public Health Agency of Canada
13 Gasmi, S., Ogden, N. H., Lindsay, L. R., Burns, S., Fleming, S., Badcock, J., … Koffi, J. K. (2017). Surveillance for Lyme disease in Canada: 2009-2015. Canada communicable disease report = Releve des maladies transmissibles au Canada, 43(10), 194–199.
14 Ontario Agency for Health Protection and Promotion (Public Health Ontario). Blacklegged tick surveillance in Ontario: A systematic review. Toronto, ON: Queen’s Printer for Ontario; 2016.
15 Bouchard C, Dibernardo A, Koffi J, Wood H, Leighton PA, Lindsay LR. Increased risk of tick-borne diseases with climate and environmental changes. Can Commun Dis Rep 2019; 45(4):81–
16 Lyme disease [Internet]. Ontario.ca. 2016 [cited 25 October 2018]. Available from: https://www.ontario.ca/page/lyme-disease