Dr. Joss Reimer has been appointed as Canada’s new Chief Public Health Officer, taking on the critical task of addressing health misinformation and restoring public trust in health institutions. Reimer, a seasoned public health advocate from Manitoba, emphasised the need for a proactive strategy to counteract the rapid spread of false information during her inaugural interview following the announcement of her three-year tenure.
Acknowledging the Challenge of Misinformation
In her remarks, Dr. Reimer highlighted the significant challenge posed by health misinformation, particularly in the wake of the COVID-19 pandemic. “One of the biggest challenges with health misinformation is the speed at which it changes,” she stated. The pandemic, she noted, not only brought about unprecedented public health challenges but also eroded trust in institutions as individuals grappled with 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, recognising the long journey ahead.
Reimer’s predecessor, Dr. Theresa Tam, became a prominent figure during the pandemic, providing frequent updates to the public. Following her retirement in June after eight years in the role, Reimer’s experience as the Chief Medical Officer for the Winnipeg Health Authority and as the medical lead for Manitoba’s COVID-19 vaccination task force positions her well to step into this pivotal role.
The Landscape of Public Health Challenges
Health Minister Marjorie Michel acknowledged the importance of Reimer’s appointment at a time when Canada is facing a resurgence of vaccine-preventable diseases, including measles, and grappling with public health threats such as avian influenza and the ongoing drug crisis. “We are also combating the harmful impacts of false health information,” Michel stated, underscoring the multifaceted challenges facing Canadian public health today.

Dr. Reimer expressed her concern regarding the measles outbreak specifically. Growing up in a small town impacted by vaccine hesitancy, she understands the necessity for collaboration between community leaders and federal authorities. The rise in measles cases has led to Canada losing its elimination status, a troubling development echoed by public health experts who warn that both the United States and Mexico may face similar risks.
Prioritising Trust and Collaboration
Reimer pointed out that the resurgence of measles cases is unsurprising, given the disease’s highly infectious nature and the increasing prevalence of misinformation. In December, Health Minister Michel remarked on the decline in the reliability of American health institutions following the Trump administration’s cuts to scientific funding and promotion of false narratives about vaccines. Reimer stressed the necessity for Canada to rely on its own information sources while maintaining collaboration with American counterparts, acknowledging the presence of dedicated professionals still working within the U.S. health system.
With a master’s degree in public health and a background in research on 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.”
A Legacy of Advocacy
Dr. Reimer’s leadership extends beyond her new role; as past president of the Canadian Medical Association (CMA), she has advocated for improved healthcare access and delivered a formal apology to Indigenous Peoples for historical harms inflicted by the medical profession. Current CMA President, Dr. Margot Burnell, praised Reimer’s calm and measured leadership during the pandemic, noting her commitment to fighting misinformation and enhancing healthcare access for all Canadians.

Reimer is set to officially begin her tenure on April 1, and her leadership will be closely watched as Canadians navigate the ongoing challenges posed by misinformation and public health crises.
Why it Matters
The appointment of Dr. Joss Reimer as Chief Public Health Officer comes at a crucial juncture for Canada. With health misinformation proliferating and public trust in institutions waning, Reimer’s leadership is vital for fostering a more informed and resilient society. Her commitment to collaboration, transparency, and science-driven policy will not only play a pivotal role in combating current public health threats but also in restoring faith in health institutions, which is essential for the well-being of all Canadians.