Dr. Joss Reimer, newly appointed Chief Public Health Officer of Canada, has set her sights on addressing the rampant spread of health misinformation and restoring public confidence in health systems. Announced on Friday, Reimer’s three-year term begins amid a critical juncture for Canadian public health, particularly as society grapples with the lasting repercussions of the COVID-19 pandemic and emerging health threats.
Combatting Health Misinformation
In her first public statements following her appointment, Reimer highlighted the urgency of tackling misinformation, which has proliferated at an alarming rate. “One of the biggest challenges with health misinformation is the speed at which it changes; creating a lie requires very little time,” she remarked. The rapid evolution of false narratives poses a significant challenge to health officials aiming to provide accurate and timely information to the public.
Acknowledging the erosion of trust in health institutions during the pandemic, Reimer stated, “We have a lot of trust-building that we’re going to need to do, and that’s going to take years.” Her comments reflect a broader sentiment that many Canadians experienced disconnection from health authorities during the tumultuous period of the pandemic, marked by job losses, isolation, and public health decisions that sparked widespread debate.
Acknowledging the Challenges Ahead
Reimer, who previously served as Manitoba’s Chief Medical Officer and led the province’s COVID-19 vaccination task force, is acutely aware of the challenges she faces. The pandemic thrust public health figures into the limelight, with her predecessor Dr. Theresa Tam becoming a well-known figure through extensive media coverage. Tam concluded her tenure in June after eight years, leaving Reimer to navigate a landscape fraught with skepticism and misinformation.

Health Minister Marjorie Michel emphasised the significance of Reimer’s appointment, noting the resurgence of vaccine-preventable diseases like measles, alongside threats from avian influenza, HIV, and tuberculosis. “The ongoing impacts of the illegal drug crisis and the harmful effects of false health information are also pressing concerns,” she stated.
Reimer’s unique insights into the recent measles outbreak will be beneficial as she embarks on her new role. “I come from a small town that has been affected by the measles outbreak and vaccine hesitancy,” she explained, underscoring the need for grassroots partnerships that engage community leaders and federal authorities alike.
The Impact of Misinformation on Public Health
The resurgence of measles in Canada has led to the loss of its measles elimination status, a troubling development for public health experts. Reimer attributed this rise to the “incredibly infectious” nature of the disease and the increasing prevalence of misinformation and vaccine hesitancy. Her concerns are echoed by health officials, who warn that misinformation extends beyond social media platforms, impacting public perception and health behaviours across the nation.
In the wake of the Trump administration’s cuts to American health institutions, Canada faces a dual challenge: rebuilding its own trust in health information while navigating a landscape where American sources are viewed with increased scepticism. Reimer asserted that Canada must establish its own reliable health information systems while recognising the contributions of American public health professionals.
A Collaborative Future for Public Health
Equipped with a master’s degree in public health and a history of addressing 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 optimism about 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 past role as president of the Canadian Medical Association saw her advocate for improved access to healthcare and a formal apology to Indigenous Peoples for the medical profession’s historical harms. Dr. Margot Burnell, the current president of the CMA, praised Reimer for her calm and decisive leadership during the pandemic, emphasising her commitment to fighting false health information.
Reimer’s term begins on April 1, and her appointment is already viewed as a pivotal moment for Canadian public health.
Why it Matters
The appointment of Dr. Joss Reimer comes at a crucial time for public health in Canada. As misinformation continues to threaten the fabric of health communication, her leadership could play an instrumental role in rebuilding trust and promoting vaccination. The future of public health relies on transparent communication and collaborative efforts to combat misinformation, making Reimer’s mission not just important, but essential for the health and safety of Canadians.