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Dr. Joss Reimer, the newly appointed chief public health officer of Canada, has identified the fight against health misinformation and the rebuilding of public trust as her primary objectives. Following the announcement of her three-year tenure, Reimer expressed the urgent need for the federal government to adopt proactive measures to counteract the rapid spread of false health information that has plagued the nation, especially during the COVID-19 pandemic.
Addressing the Misinformation Crisis
In a candid discussion on Friday, Reimer, a native of Manitoba, highlighted the immense challenge posed by the swift evolution of health misinformation. “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 noted. Reimer acknowledged the significant decline in public trust towards health institutions that occurred during the pandemic, as many Canadians faced personal hardships such as job losses and separation from loved ones. “We have a lot of trust-building that we’re going to need to do that’s going to take years,” she added.
The COVID-19 pandemic thrust public health officials into the limelight, with Dr. Theresa Tam, Reimer’s predecessor, becoming a familiar figure to Canadians through her frequent updates on shifting health guidelines and epidemiological data. After an impactful eight-year tenure, Tam retired in June, leaving a considerable legacy for Reimer to build upon.
Focus on Vaccine-Preventable Diseases
Amidst her new responsibilities, Reimer is acutely aware of the current public health landscape, which is marked by a resurgence of vaccine-preventable diseases, including measles. Health Minister Marjorie Michel emphasised the urgency of Reimer’s role, stating that Canada is confronting various threats such as avian influenza A (H5N1), HIV, tuberculosis, and the ongoing opioid crisis, all exacerbated by the prevalence of false health information.

Reimer, who previously served as the chief medical officer for the Winnipeg health authority, has a personal connection to the current measles outbreak, which has seen significant vaccine hesitancy in her hometown. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she remarked, reinforcing the necessity of collaborative efforts in addressing public health challenges.
The recent measles outbreak has resulted in Canada losing its elimination status, a concerning development that has raised alarms among public health experts. With the disease being highly contagious, Reimer pointed to the role of misinformation and vaccine hesitancy as contributing factors to the resurgence of cases.
A New Approach to Public Health
Canada’s public health officials are now grappling with misinformation that extends beyond social media platforms. In a statement made last December, Minister Michel indicated that American health institutions have become less reliable sources of information for Canadians, particularly since the Trump administration’s cuts to funding for scientific research and its promotion of vaccine misinformation. This shift has prompted calls for Canada to establish its own reliable channels for health information dissemination.
Reimer acknowledged the importance of collaboration while asserting Canada’s need for independent and trustworthy health communication. “I know that there are still really amazing people in the American system doing wonderful work, and so I think that there’s a lot of ways that we can continue to work together,” she said.
Leadership and Experience
With a master’s degree in public health and a background in researching sexually transmitted diseases and drug-related harms, Reimer brings a wealth of experience to her new role. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s leadership, 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 tenure at the Canadian Medical Association, which included delivering an apology to Indigenous Peoples for historical harms caused by the medical profession, highlights her commitment to equity and inclusiveness in health care. Dr. Margot Burnell, the current president of the CMA, praised Reimer’s calm and measured leadership style during the pandemic, noting her advocacy for addressing false health information and improving access to care.
Reimer is set to officially assume her role on April 1, signalling a new chapter in public health leadership as Canada seeks to reclaim trust and combat misinformation.
Why it Matters
The appointment of Dr. Joss Reimer comes at a critical juncture for Canada’s health landscape. With rising vaccine hesitancy and a myriad of health threats, the need for a trusted public health voice has never been more pressing. Reimer’s commitment to tackling misinformation head-on and fostering collaboration between community leaders and government agencies could prove pivotal in restoring public trust in health institutions. As Canada navigates this complex terrain, Reimer’s leadership will be essential in ensuring that accurate and reliable health information prevails, ultimately safeguarding the health of all Canadians.