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Dr. Joss Reimer has been appointed Canada’s new chief public health officer, with her tenure beginning on April 1. In her first public interview since the announcement, Reimer highlighted the urgent need to combat health misinformation and restore public trust, both of which have been severely tested during the COVID-19 pandemic.
Addressing Health Misinformation
Reimer, a Manitoba native, emphasised the need for a proactive governmental approach to tackling the rapid spread of false information regarding health matters. “One of the biggest challenges with health misinformation is the speed at which it evolves,” she remarked. “It doesn’t take long to generate a lie.” This acknowledgment of the evolving landscape of misinformation underscores the pressing need for accurate communication from health authorities.
The pandemic has left a significant mark on the public’s trust in institutions, particularly in health-related information. Reimer noted the emotional toll of the pandemic, stating, “People were losing jobs and income, and many were separated from loved ones. The decisions made during that time were challenging, and we must recognise that rebuilding trust will require years of effort.”
The Legacy of Dr. Theresa Tam
Reimer takes over from Dr. Theresa Tam, who became a prominent figure in Canadian public health during the pandemic. Tam, who recently retired after an eight-year tenure, provided daily updates to the public, guiding Canadians through a tumultuous period of shifting health advice and epidemiological data.

Reimer herself played a critical role during the pandemic as the chief medical officer for the Winnipeg health authority and as the medical lead for Manitoba’s COVID-19 vaccine implementation task force. Her experience places her in a unique position to lead Canada’s public health efforts at a time when misinformation and vaccine hesitancy are resurging.
The Challenges Ahead
Health Minister Marjorie Michel described Reimer’s appointment as timely, given the current resurgence of vaccine-preventable diseases, including measles, and the ongoing challenges posed by avian influenza, HIV, and tuberculosis. “We are also grappling with the continuing impacts of the illegal drug crisis and the significant harms caused by false health information,” she stated, highlighting the multifaceted issues Reimer will need to address.
Reimer’s personal experiences with vaccine hesitancy—growing up in a small town now affected by a measles outbreak—provide her with a distinct perspective on the challenges of public health communication. “We need to foster collaborations from grassroots community leaders to the federal government,” she urged.
The measles outbreak has reached a point where Canada has lost its measles elimination status, a worrying development echoed by public health experts. Reimer pointed out that the disease is “incredibly infectious” and its resurgence can be attributed to both misinformation and hesitancy surrounding vaccinations.
Strengthening Public Health Infrastructure
The Canadian Medical Association has expressed confidence in Reimer’s capabilities. Nancy Hamzawi, president of the Public Health Agency of Canada, stated, “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 commitment to evidence-based solutions is fortified by her master’s degree in public health and her previous research on sexually transmitted diseases and drug-related harms. Her past leadership at the Canadian Medical Association included a formal apology to Indigenous Peoples for the historical harms inflicted by the medical profession, showcasing her commitment to equity in healthcare.
Dr. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer for her calm leadership during the pandemic, stating, “She led the fight against false health information and advocated strongly for solutions to improve access to care for everyone in Canada.”
Why it Matters
Dr. Joss Reimer’s appointment as chief public health officer comes at a crucial juncture for Canada. As the nation grapples with the ramifications of the COVID-19 pandemic, her leadership will be pivotal in restoring faith in public health systems and combating misinformation. With rising vaccine hesitancy and the resurgence of preventable diseases, her proactive approach is essential not just for addressing immediate public health crises, but for laying the groundwork for a more informed and healthier future for all Canadians.