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Tick-Borne Diseases in Canada

Jul 16, 2025

Overview

The report discusses the rising risks of tick-borne illnesses in Canada, highlighting increasing cases of babesiosis and Lyme disease, and the importance of early detection and surveillance.

Impact of Tick-Borne Diseases

  • Justin Wood describes losing his ability to engage in sports, reading, and music due to Lyme disease contracted in 2015.
  • Lyme disease had a profound negative effect on Wood’s quality of life.

Emergence of Babesiosis

  • Wood’s genetic tick testing in Ontario has identified new species of bacteria causing babesiosis.
  • Babesiosis is a parasitic blood infection caused by Babesia, presenting with flu-like symptoms and potential for severe disease.

Health Risks and Vulnerable Populations

  • Dr. Peter Krause notes babesiosis can be fatal in up to 20% of cases, especially for people without spleens, cancer patients, individuals with HIV/AIDS, infants, and those over 60.
  • The first Canadian case of babesiosis was documented in a Manitoba child in 2013.

Geographic Spread and Surveillance

  • Black-legged ticks are spreading in Canada, making babesiosis more prevalent, similar to patterns in the United States.
  • Risk areas for tick-borne diseases now include Manitoba, Ontario, and Nova Scotia.
  • Wood operates labs in Ontario and New Brunswick and advocates for increased tick testing and disease monitoring.

Recommendations / Advice

  • Early detection and increased surveillance are crucial for controlling the spread of tick-borne illnesses.
  • Enhanced treatment options and awareness are needed to address newly emerging and existing tick-borne diseases.