Dr. Joss Reimer, Canada’s newly appointed chief public health officer, has identified the urgent need to address health misinformation and rebuild public trust in health institutions as her primary objectives. Announced on Friday, Reimer’s three-year term begins at a pivotal moment for Canadian public health, as the nation grapples with the ramifications of the COVID-19 pandemic and a resurgence of vaccine-preventable diseases.
Tackling the Challenge of Misinformation
In a recent interview, Reimer highlighted the rapid evolution of health misinformation as one of her greatest concerns. “One of the biggest challenges with health misinformation is the speed at which it changes, because it doesn’t take a lot of time to come up with a lie,” she stated. This persistent issue has been exacerbated during the pandemic, during which public trust in government and health authorities suffered a significant decline.
Reimer reflected on the complex circumstances that contributed to this erosion of trust. “Because there was so much difficulty — people were losing jobs and income, people were being separated from loved ones. And whether or not those were right decisions, it was hard,” she noted. Consequently, she emphasised the long road ahead for rebuilding that trust, acknowledging it could take years to mend the relationship between Canadians and their health institutions.
A Strong Leadership Transition
Reimer steps into her role following the retirement of Dr. Theresa Tam, who became a prominent figure during the pandemic, providing crucial updates to the public. Tam’s tenure lasted eight years, during which she became a trusted voice amid the uncertainty of COVID-19. Reimer also played a significant role during this period as the chief medical officer for the Winnipeg health authority and the medical lead for Manitoba’s COVID-19 vaccination task force.

Health Minister Marjorie Michel underscored the importance of Reimer’s appointment at this critical juncture. “Canada is facing a resurgence of vaccine-preventable diseases such as measles, the threats posed by avian influenza A (H5N1), HIV and tuberculosis, the ongoing impacts of the illegal drug crisis, and the harmful effects of false health information,” she stated.
The Measles Outbreak and Vaccine Hesitancy
Drawing from her own experiences in a small town impacted by vaccine hesitancy, Reimer expressed her unique perspective on the current measles outbreak. She stressed the necessity of forming partnerships that span from community leaders to federal authorities to address these challenges effectively. The ongoing outbreak has led to Canada losing its measles elimination status, a troubling development that public health experts have deemed alarming.
Reimer explained that the rise in measles cases is not unexpected given the disease’s highly contagious nature and the increasing prevalence of misinformation surrounding vaccines. “It’s not a shock that measles cases are on the rise, given how incredibly infectious the disease is and given that there is more misinformation and more vaccine hesitancy,” she asserted.
The Need for Reliable Information
In the context of misinformation, Reimer remarked on the shifting landscape of health communication, noting that the availability of reliable information has come under scrutiny. The Public Health Agency of Canada has indicated that misinformation is not confined to social media but has permeated various channels.

In December, Minister Michel highlighted concerns regarding the reliability of American health institutions as a source of information, particularly following the Trump administration’s cuts to scientific funding and promotion of false narratives about vaccines. Reimer emphasised the need for Canada to establish its own robust channels for sharing trustworthy information, while acknowledging the continued collaborative potential with American health professionals.
A Vision for Future Health Policies
Reimer brings a wealth of knowledge to her new role, holding a master’s degree in public health and a history of research focused on sexually transmitted diseases and drug-related harms. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed her enthusiasm for working alongside Reimer, 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 also has a notable history with the Canadian Medical Association, where she served as president and issued a formal apology to Indigenous Peoples for the medical profession’s historical harms. Dr. Margot Burnell, the current president of the CMA, praised Reimer’s leadership during the pandemic, recognising her efforts to combat misinformation and advocate for equitable healthcare access.
Dr. Joss Reimer will officially assume her duties on April 1, marking the beginning of what she hopes will be a transformative period for public health in Canada.
Why it Matters
The appointment of Dr. Joss Reimer is a crucial step in addressing the ongoing challenges facing Canada’s public health landscape. With an urgent need to counteract misinformation and restore public trust, her leadership could significantly influence how Canadians engage with health information and services in the future. Reimer’s commitment to fostering collaboration and building partnerships at all levels of government and community will be essential in navigating the complexities of public health and ensuring the well-being of all Canadians. As misinformation continues to pose a threat, the effectiveness of her strategies will be closely observed in the coming years.