Lyme disease surveillance in Canada: Annual edition 2019 (infographic)
- Organization: Public Health Agency of Canada
- Date published: October 2023
What is Lyme disease?
- Lyme disease is a bacterial infection transmitted to humans through the bite of an infected tick.
- Early clinical manifestations can present as flu-like symptoms including joint pain and/or bull's eye rash. If untreated, individuals may experience cardiac and neurologic manifestations and arthritis.
What is the risk?
- Lyme disease is the most frequently reported vector-borne disease in Canada.
- The greatest risk of acquiring Lyme disease occurs in regions where populations of ticks carrying the bacteria, Borrelia burgdorferi, have become established.
Who's at greater risk?
- Children aged 5-14 years
- Adults aged 55-79 years
Facts reported in 2019
- 2,634 cases of Lyme disease were reported, of which 72% were confirmed cases and 28% probable cases
- 57% cases were males
- 43% cases were females
Geographic distribution of reported cases
|Province||Number of reported Lyme disease cases|
|Prince Edward Island||6|
|Newfoundland & Labrador||0|
Cases reported by Alberta, Saskatchewan and Prince Edward Island were travel−related only. 6% of reported cases were likely infected during travel in the USA or Europe.
- 38% of cases reported illness onset in July
- 97% of the cases occurred from May through November
Public health recommendations: Tips to avoid tick bites
Protecting yourself when doing outdoor activity:
- cover exposed skin
- use insect repellent
- do a full-body check for ticks after each outdoor activity
- remove ticks using clean, fine-tipped tweezers
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