Caused by the bacterium, Borrelia burgdorferi, Lyme is an emerging tick-borne disease. In Canada, populations of infected ticks are established in southern parts of Manitoba, Ontario and Quebec, in certain locations in New Brunswick and Nova Scotia, and in southern British Columbia. The disease can be characterized by special rash (i.e. erythema migrans) at an early stage. If untreated, in the later stages, the disease can involve major organ systems such as musculoskeletal, nervous, and cardiovascular systems.