From April to November, there is a small chance of being exposed to Lyme disease if bitten by an infected blacklegged (deer) tick. Lyme disease is a serious illness; however, it's easy to prevent and treat when caught early.

For more information on Lyme disease, blacklegged ticks, and how to protect yourself from tick bites while enjoying the outdoors, visit the Public Health Agency of Canada.

The following Parks Canada areas, as well as other nearby National Historic Sites, are considered by the Public Health Agency of Canada to be in risk areas for Lyme Disease:

Western Canada and Prairies
  • Pacific Rim National Park Reserve
  • Gulf Islands National Park Reserve
  • Riding Mountain National Park
Ontario and Quebec
  • Point Pelee National Park
  • National Historic Sites in southern Ontario
  • Thousand Islands National Park
  • Rouge National Urban Park
  • Trent-Severn Waterway National Historic Site
  • Rideau Canal National Historic Site
  • La Mauricie National Park
  • Lachine and Chambly Canal National Historic Sites
Atlantic Canada
  • Fundy National Park
  • St. Andrews Blockhouse and Carleton Martello Tower National Historic Sites
  • Cape Breton Highlands National Park
  • Kejimkujik National Park and Historic Site
  • National Historic Sites in Nova Scotia

As ticks attach themselves to birds, they can be found in areas across Canada, other than those noted above. The Public Health Agency of Canada, in partnership with provincial and territorial public health organizations is conducting ongoing surveillance to help identify the spread of blacklegged tick populations in Canada.

Because localized tick populations can spread, it is difficult to define the geographic limits of a population. Canadians living or visiting areas next to established tick populations are advised to take precautions against ticks.