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Please note that Canadian Lyme disease statistics tend to be a few years out of date.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.
Updated: June 1, 2021

National

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

  • 2,636 cases diagnosed nationally.
  • Most cases were from Ontario, Quebec, Nova Scotia.
  • Total number of cases represent a spike over the previous year.


British Columbia

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

  • 9 cases reported.
  • All reported cases were laboratory confirmed.
  • 2 cases were contracted within the province.


Alberta

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

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



Saskatchewan

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

  • 1 case recorded.
  • Lone case may have been contracted in AB, BC or SK.


Manitoba

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

  • 84 cases reported
  • There were 30 confirmed cases and 34 probable cases.
  • 20 cases did not meet national case definitions for confirmed or probable cases.


Ontario

2021 is the most current year for which statistics are available.

  • 809 cases of Lyme disease were diagnosed in 2020.
  • 23 cases of Lyme disease were reported in the first three months of 2021.


Quebec

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

  • 500 cases were reported.
  • Over 75% of Lyme infections were acquired within the province.
  • The highest risk is in the Estrie, Monteregie, Mauricie and Centre-du-Quebec and Outaouais regions.


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

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

  • 830 confirmed or probable cases.
  • Most cases were recorded in the 40-59 and 60+ age groups
  • Nova Scotia's Lyme disease rate is more than 10 times the national rate.


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

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

  • 1 laboratory confirmed 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.