Dr. Joss Reimer has been appointed as Canada’s new chief public health officer, with a clear mandate to combat health misinformation and restore public confidence in health institutions. Announced on Friday, Reimer’s three-year term comes at a pivotal moment as the country grapples with rising vaccine-preventable diseases and the lingering effects of the COVID-19 pandemic.
A Call to Action Against Misinformation
In her first interview following the announcement, Reimer emphasised the urgent need for a proactive federal response to the rampant spread of false health information. “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 remarked. This sentiment underscores the complex landscape public health officials must navigate, particularly in an era where misinformation can spread faster than accurate data.
Reflecting on the erosion of trust during the pandemic, Reimer acknowledged the difficulties faced by Canadians, stating, “People were losing jobs and income, and being separated from loved ones. And whether or not those were right decisions, it was hard.” She noted that rebuilding this trust will be a long-term endeavour, suggesting that it could take years to mend the relationship between health authorities and the public.
Learning from the Past
Reimer steps into her new role following the retirement of Dr. Theresa Tam, who became a prominent figure during the pandemic, delivering daily updates to a nation seeking clarity amidst uncertainty. Reimer herself played a critical role during this time as the chief medical officer for the Winnipeg health authority and as the medical lead for Manitoba’s COVID-19 vaccine implementation task force.

Health Minister Marjorie Michel highlighted the importance of Reimer’s appointment, noting that Canada is currently facing a resurgence of vaccine-preventable diseases, such as measles, as well as threats from avian influenza A (H5N1), HIV, and tuberculosis. The ongoing fallout from the illegal drug crisis and the damaging effects of misinformation further complicate the public health landscape.
Tackling Vaccine Hesitancy
Dr. Reimer’s insights are particularly relevant given her background; she hails from a community that has experienced vaccine hesitancy firsthand, a factor contributing to the current measles outbreak. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she asserted. Canada’s loss of measles elimination status—previously held since 1998—serves as a stark reminder of the challenges ahead.
The rise in measles cases is not surprising, according to Reimer, who described the disease as “incredibly infectious,” especially in an environment rife with misinformation and vaccine hesitancy. Public health officials have warned that the battle against misinformation extends beyond social media, affecting perceptions and behaviours in various communities.
A Vision for the Future
Reimer’s mandate also includes ensuring that Canada can rely on its own sources of trustworthy health information, especially in the context of strained relationships with American health institutions due to political shifts. “Canada needs to stand on its own and ensure it’s sharing trustworthy information,” she stated, while acknowledging the valuable work still being done by many in the American health system.

With a master’s degree in public health and a background in research focused on sexually transmitted diseases and drug-related harms, Reimer brings a wealth of knowledge and experience to her new role. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s ability to enhance public health and well-being, 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. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer for her calm and measured leadership during the pandemic. “At the CMA, Reimer led the fight against false health information and advocated strongly for solutions to improve access to care for everyone in Canada,” Burnell remarked.
As Dr. Reimer prepares to begin her term on April 1, her commitment to fostering a truthful and trustworthy health environment will serve as a guiding principle throughout her leadership.
Why it Matters
The appointment of Dr. Joss Reimer as chief public health officer is not just a change in leadership; it represents a critical juncture for public health in Canada. With misinformation posing a significant threat to community health, her focus on rebuilding trust and ensuring the dissemination of accurate information is essential. As Canada navigates through the aftermath of the pandemic and addresses the rising tide of vaccine-preventable diseases, Reimer’s proactive approach may be key to safeguarding the health of Canadians and restoring faith in public health systems. The implications of her strategies will resonate far beyond the immediate challenges, potentially shaping a resilient framework for health communication in the years to come.