Dr. Joss Reimer has officially been appointed as Canada’s chief public health officer, a role she will assume on April 1. With an agenda that prioritises the battle against health misinformation and the urgent need to rebuild public trust, Reimer acknowledges the significant challenges posed by the legacy of the COVID-19 pandemic. In her inaugural interview following the announcement of her three-year term, she emphasised the need for a proactive federal response to counter misleading information that has proliferated in recent years.
Addressing Health Misinformation
Dr. Reimer, a native of Manitoba, highlighted the rapid evolution of health misinformation as a pressing concern. “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 observation underscores the need for a dynamic strategy to dispel false narratives that can have dire consequences for public health.
During the pandemic, trust in health institutions was sorely tested, a reality Reimer does not shy away from acknowledging. “People were losing jobs and income, and being separated from loved ones. Whether or not those were right decisions, it was hard,” she reflected. The pandemic has created a significant trust deficit that will require years of diligent effort to mend.
A Critical Transition in Leadership
Dr. Reimer steps into her new role following the retirement of Dr. Theresa Tam, who became a household name during her tenure, delivering regular updates to Canadians amid the evolving landscape of the pandemic. Tam’s departure after eight years leaves a notable gap in leadership, and Reimer’s experience as the chief medical officer for the Winnipeg health authority positions her uniquely to guide the nation forward.

Reimer was also integral to Manitoba’s COVID-19 vaccine rollout, allowing her to witness firsthand the complexities of public health communication during a crisis. Her appointment comes at a time when Canadian Health Minister Marjorie Michel has expressed concern over a resurgence of vaccine-preventable diseases, including measles, which had previously seen Canada lose its elimination status—a situation that experts are now deeming alarming.
The Challenge of Vaccine Hesitancy
Reimer’s personal connection to the measles outbreak, stemming from her upbringing in a small town affected by vaccine hesitancy, fuels her determination to address this issue. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she asserted. This collaborative approach is crucial, as rising measles cases are exacerbated by misinformation and vaccine scepticism.
The current climate is further complicated by the ongoing impacts of the illegal drug crisis and the threat of diseases such as avian influenza, HIV, and tuberculosis. With misinformation not confined to social media, Reimer acknowledges that restoring public confidence in health institutions will require a comprehensive and multifaceted strategy.
Rebuilding Trust Through Strong Leadership
Reimer’s credentials are impressive; she holds a master’s degree in public health, has conducted research on sexually transmitted diseases, and previously served as president of the Canadian Medical Association, where she advocated for access to care and addressed the historical harms inflicted on Indigenous Peoples by the medical community.

Nancy Hamzawi, president of the Public Health Agency of Canada, welcomed Reimer’s appointment, expressing confidence in her ability to navigate the complexities of public health leadership at a time when science-based guidance is paramount. Dr. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer’s calm and measured approach during the pandemic, noting her commitment to tackling misinformation and improving healthcare access for all Canadians.
Why it Matters
Dr. Joss Reimer’s appointment as chief public health officer represents a pivotal moment for Canada’s public health landscape. With the shadows of the COVID-19 pandemic still looming, her focus on combating misinformation and rebuilding trust is not just timely—it is essential. As communities grapple with the repercussions of the pandemic and the threat of resurgent diseases, effective leadership that prioritises transparency and collaboration will be crucial in safeguarding the health and well-being of Canadians. Reimer’s proactive strategies could define the future of public health in the nation, ensuring that accurate information and trust are restored in the face of adversity.