Dr. Joss Reimer has been appointed as Canada’s new chief public health officer, stepping into a role that demands urgent attention to health misinformation and the restoration of public confidence in health institutions. Announced on Friday, Reimer’s three-year tenure begins amid a concerning rise in vaccine-preventable diseases and ongoing public health challenges. With a wealth of experience, including her role as chief medical officer for Winnipeg, she aims to tackle misinformation head-on while promoting evidence-based health practices.
A Call to Action Against Misinformation
In her first remarks following the announcement, Reimer highlighted the urgent need for a proactive response to the rapidly evolving landscape of health misinformation. “One of the biggest challenges with health misinformation is the speed at which it changes,” she stated. As false narratives proliferate, particularly on social media platforms, the necessity for robust, trustworthy information becomes increasingly vital.
Reimer acknowledged the significant erosion of public trust during the COVID-19 pandemic. “The pandemic brought about immense challenges — job losses, separation from loved ones — and regardless of whether decisions made were right or wrong, it was a difficult time for everyone,” she reflected. She emphasised that rebuilding trust will be a long-term endeavour, requiring years of concerted effort across all levels of government and community.
Addressing the Measles Outbreak
Canada has recently experienced a resurgence of measles, which has alarmingly led to the loss of its measles elimination status, a designation held since 1998. Reimer, who has personal connections to a community affected by vaccine hesitancy, voiced her concerns: “I come from a small town that is part of the measles outbreak, and we need to forge partnerships from grassroots community leaders to federal authorities.”

With the highly infectious nature of measles compounded by growing vaccine misinformation, Reimer’s insights into this pressing issue are particularly timely. Public health experts across the nation echo her sentiments, noting that increased vaccine hesitancy, fuelled by misinformation, poses substantial risks.
The Role of Community and Cross-Border Collaboration
Health Minister Marjorie Michel underlined the critical timing of Reimer’s appointment, pointing to multiple public health threats, including avian influenza A (H5N1), HIV, tuberculosis, and the ongoing opioid crisis. She stated, “Canada is facing a resurgence of vaccine-preventable diseases, and addressing these challenges requires strong leadership and innovative solutions.”
Reimer has called for a collaborative approach, emphasising the importance of building relationships within communities to combat health misinformation. She acknowledges the ongoing need to ensure that Canada shares reliable health information independently, especially in light of recent trends in the United States that have undermined the reliability of American health institutions.
A Legacy of Leadership
Dr. Reimer’s extensive background in public health, including her former presidency of the Canadian Medical Association, positions her uniquely to lead Canada’s public health strategy. During her tenure at the CMA, she was recognised for her calm and measured approach during the pandemic, as well as her advocacy against health misinformation.

Nancy Hamzawi, the president of the Public Health Agency of Canada, expressed confidence in Reimer’s ability to advance public health initiatives. “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,” she stated.
Why it Matters
Dr. Joss Reimer’s leadership comes at a pivotal moment for public health in Canada. As misinformation continues to spread, the potential consequences for community health are dire. Rebuilding trust in public health institutions is crucial not only for managing current health crises but also for fostering long-term public engagement in health initiatives. With her experience and commitment, Reimer represents a renewed hope for a future where Canadians can rely on accurate health information and robust public health strategies. Her appointment is not just a transition in leadership; it is a clarion call for a comprehensive approach to safeguarding the health of all Canadians.