Dr. Joss Reimer has been appointed as Canada’s new Chief Public Health Officer, with a mission to address the rampant health misinformation that has compromised public trust in health institutions. Announced on Friday, Reimer emphasised the urgency of adopting a proactive stance against false narratives surrounding health, particularly in the wake of the COVID-19 pandemic’s profound impact on public perception.
The Challenge of Misinformation
In her first interview following the announcement, Reimer highlighted the rapid evolution of health misinformation as a significant obstacle. “One of the biggest challenges with health misinformation is the speed at which it changes,” she stated. “It doesn’t take long to fabricate a lie.” Recognising that the pandemic has led to a considerable erosion of trust in health authorities, she reflected on the emotional toll of the crisis: “People were losing jobs and income, and being separated from loved ones. These decisions, whether right or wrong, were difficult for many.” Reimer believes that rebuilding this trust will be a long-term endeavour, potentially taking years to achieve.
A Legacy of Leadership
Reimer steps into her new role following Dr. Theresa Tam, who garnered national recognition during the pandemic for her consistent communication of evolving health guidelines. Tam retired in June after an impactful eight-year tenure. During her time in the spotlight, Reimer also served as Manitoba’s chief medical officer and led the province’s COVID-19 vaccination task force, gaining first-hand experience in public health leadership amid crisis.

Health Minister Marjorie Michel acknowledged the significance of Reimer’s appointment, noting that Canada is currently facing a resurgence of vaccine-preventable diseases, including measles, alongside the ongoing threats of avian influenza A (H5N1), HIV, and tuberculosis. “The harmful impacts of false health information further complicate our situation,” she remarked.
Addressing Vaccine Hesitancy
Reimer’s intimate knowledge of the measles outbreak, which has resulted in the loss of Canada’s measles elimination status first achieved in 1998, positions her uniquely to tackle vaccine hesitancy. “I come from a small town that is part of the measles outbreak, where we have seen considerable vaccine hesitancy. We need partnerships that extend from community leaders to the federal government,” she noted. The alarming rise in measles cases is not unexpected, given the disease’s highly contagious nature and the increasing prevalence of misinformation regarding vaccinations.
Navigating Cross-Border Challenges
Compounding the challenges at home, Canadian health officials have warned that misinformation extends beyond social media platforms. In December, Minister Michel indicated that American health institutions have become unreliable sources of health information for Canadians, following significant funding cuts under the previous U.S. administration. This shift has altered the long-standing relationship between Canada and the United States regarding public health messaging. Reimer asserted the need for Canada to rely on its own resources and ensure that it disseminates trustworthy information: “I know there are still amazing people in the American system doing wonderful work, and I think there are ways we can continue to collaborate.”

A Commitment to Public Health
Armed with a Master’s degree in public health and a history of research into sexually transmitted diseases and drug-related harms, Reimer is well-prepared to lead the charge against false health narratives. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s vision and dedication, stating, “At a time when strong, science-driven leadership has never been more important, I am confident that her vision and dedication will help advance the public health and well-being of Canadians.”
Reimer’s previous role as president of the Canadian Medical Association included a formal apology to Indigenous Peoples for the medical profession’s historical wrongs. Dr. Margot Burnell, the current president of the Association, praised Reimer’s calm leadership during the pandemic, noting her advocacy against misinformation and her commitment to improving healthcare access for all Canadians.
Reimer is set to officially begin her duties on April 1.
Why it Matters
The appointment of Dr. Joss Reimer as Chief Public Health Officer comes at a crucial juncture for Canadian public health. With rising vaccine-preventable diseases and growing scepticism towards health messaging, her focus on combating misinformation and rebuilding trust is vital. The implications of her leadership extend beyond public health; they represent a pivotal opportunity to strengthen community resilience and foster a more informed society. In an era where health information is often obscured by falsehoods, Reimer’s role could prove instrumental in restoring faith in public health initiatives and safeguarding the health of Canadians.