Lyme Disease Statistics

Please note that Canadian Lyme disease statistics tend to be a few years out of date. Only Ontario reports Lyme disease cases within a few months of being recorded. It is also helpful to be aware that the case definition for Lyme disease changed in 2016, so any abrupt jumps seen in statistics for that year don't necessarily mean it was a bad year for Lyme infections in a province. It may just mean that more cases fit the revised definition.

National

2018 is the most current year for which statistics are available.

  • 1,487 cases diagnosed nationally.
  • Most cases were from Ontario, Quebec, Nova Scotia.
  • Total number of cases was notably lower than the previous year.

British Columbia

2017 is the most current year for which statistics are available.

  • 17 cases reported.
  • All reported cases were laboratory confirmed.
  • Just over half of cases caused by European strains.

Alberta

2018 is the most current year for which statistics are available.

  • 15 cases reported.
  • All cases were acquired outside of the province.
  • Lyme disease rates in Alberta are well below the national rates.

Saskatchewan

2019 is the most current year for which statistics are available.

  • 1,514 blood samples were tested for Lyme disease.
  • 1 person tested positive, but infection acquired in the US.
  • 2001 and 2017 are the only years for which a locally acquired case of Lyme disease was recorded.

Manitoba

2018 is the most current year for which statistics are available.

  • 70 cases reported
  • More than 90% of cases were contracted in the province.
  • Two-thirds of Manitobans with confirmed or probable cases could not remember a tick bite.

Ontario

2020 is the most current year for which statistics are available.

  • 1,133 cases of Lyme disease were diagnosed in 2019.
  • 14 cases of Lyme disease were reported in the first two months of 2020.

Quebec

2018 is the most current year for which statistics are available.

  • 304 cases were reported.
  • Over 70% of Lyme infections were acquired within the province.
  • The Eastern Townships reported the highest number of cases.

Newfoundland & Labrabor

2016 is the most current year for which statistics are available.

  • One case was reported in 2016.
  • Eight cases have been recorded since 1991.
  • No cases of Lyme have been acquired within the province.

Nova Scotia

2018 is the most current year for which statistics are available.

  • 451 confirmed or probable cases.
  • Most cases were recorded in the 40-59 and 60+ age groups
  • More than half of Lyme patients in NS were male.

New Brunswick

2018 is the most current year for which statistics are available.

  • 20 confirmed cases were reported.
  • 90% of cases were locally acquired.
  • Lyme rates have been trending upwards over the past seven years.

Prince Edward Island

2018 is the most current year for which statistics are available.

  • 1 probable case, which was travel related.
  • Only one locally acquired case has ever been recorded (in 2012).
  • On average there are 0-4 cases of Lyme reported each year.