Dr. Joss Reimer, appointed as Canada’s new chief public health officer, has made it clear that addressing health misinformation and rebuilding public trust in health institutions will be her primary focus. Announced on Friday, her three-year tenure comes at a pivotal moment, as the nation grapples with the fallout of the COVID-19 pandemic and faces a resurgence of vaccine-preventable diseases.
Urgent Need for a Proactive Approach
In her initial statements following the announcement, Dr. Reimer highlighted the rapid evolution of health misinformation as a significant hurdle. “One of the biggest challenges with health misinformation is the speed at which it changes,” she noted. “It doesn’t take long to create a falsehood, and that’s particularly concerning in our current climate.”
The COVID-19 pandemic has had far-reaching effects, eroding trust in public health messages. Dr. Reimer reflected on the challenges faced during this period, acknowledging the societal upheaval that accompanied the health crisis. “People were losing jobs and income; they were separated from loved ones. Whether those decisions were right or wrong, they were incredibly difficult,” she stated. “We have a long journey ahead of us to rebuild that trust, and it will take years.”
Acknowledging Past Challenges
Dr. Reimer steps into her role following the retirement of Dr. Theresa Tam, who became a prominent figure during the pandemic, providing essential updates to the public. Having previously served as the chief medical officer for the Winnipeg health authority and leading Manitoba’s COVID-19 vaccination task force, Reimer brings valuable experience to her new position.

Health Minister Marjorie Michel expressed confidence in Reimer’s capabilities, emphasising the importance of her leadership at a time when Canada faces multiple health threats, including a rise in vaccine-preventable diseases like measles, avian influenza, and ongoing challenges related to substance misuse.
Addressing Vaccine Hesitancy
Dr. Reimer’s insights into the current measles outbreak are particularly poignant. “I come from a small town that has been affected by the outbreak, where vaccine hesitancy is prevalent. We need collaboration from community leaders to the federal government,” she urged.
The resurgence of measles has resulted in Canada losing its elimination status, a situation that alarms public health experts nationwide. The highly contagious nature of measles, coupled with increasing misinformation and vaccine hesitancy, creates a perfect storm for public health.
The Role of Misinformation in Public Health
Misinformation is not confined to social media; it has permeated various channels, complicating public health efforts. Minister Michel previously noted that the reliability of American health institutions has diminished, exacerbated by the previous U.S. administration’s policies that undermined scientific credibility.

Dr. Reimer emphasised the necessity for Canada to cultivate its own sources of trustworthy health information. “There are still incredible individuals in the American system doing significant work, and there are numerous avenues for collaboration,” she acknowledged.
Expertise and Leadership
With a master’s degree in public health and a history of research involving sexually transmitted diseases and drug-related issues, Dr. Reimer is well-equipped to lead Canada’s health initiatives. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed optimism about Reimer’s vision and dedication, 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.”
Dr. Reimer has also served as president of the Canadian Medical Association, where she made significant strides in advocating for Indigenous Peoples and addressing systemic harms caused by the medical profession. Current CMA president Dr. Margot Burnell praised Reimer’s steady leadership during the pandemic, highlighting her commitment to combating misinformation and enhancing healthcare access for all Canadians.
Dr. Reimer is set to officially begin her role on April 1.
Why it Matters
Dr. Reimer’s appointment comes at a critical juncture for public health in Canada. With rising health threats and a populace increasingly sceptical of health information, her leadership could be pivotal in restoring faith in public health initiatives. Tackling misinformation and fostering community partnerships will be vital not only for managing current health crises but also for safeguarding the health of future generations. The efficacy of her strategies will directly influence public health outcomes and the overall trust Canadians place in their health institutions.