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Dr. Joss Reimer, a prominent figure in Canada’s public health sector, has been appointed as the new Chief Public Health Officer, a role she will assume on April 1. With a focus on combatting health misinformation and restoring public confidence, Reimer’s approach is critical in a landscape still reeling from the effects of the COVID-19 pandemic. Her insights, shared during a recent interview, highlight the urgency of addressing the rapid spread of false health information and the long-term efforts needed to rebuild trust in health institutions.
Addressing the Challenge of Misinformation
In her new role, Reimer emphasised the formidable nature of health misinformation, stating that “one of the biggest challenges is the speed at which it changes.” She underscored how quickly misinformation can proliferate, making it crucial for the federal government to adopt proactive strategies to counteract these narratives. This challenge is particularly significant given the erosion of trust in health authorities observed during the pandemic, where decisions made in the face of unprecedented crises often left citizens feeling disconnected and vulnerable.
Reimer articulated the emotional toll of the pandemic, noting, “People were losing jobs and income, and being separated from loved ones. Whether those were right decisions or not, it was hard.” She acknowledged that the process of rebuilding trust will take years, necessitating a concerted effort from both public health officials and the government.
Acknowledging the Legacy of Leadership
Reimer steps into this pivotal role following the retirement of Dr. Theresa Tam, who became a household name for her regular updates during the pandemic. Tam’s near-daily communications were instrumental in guiding Canadians through a tumultuous period filled with uncertainty and fear. As the former chief medical officer for the Winnipeg health authority and the medical lead for Manitoba’s COVID-19 vaccination task force, Reimer has a comprehensive understanding of the challenges faced throughout the pandemic.

Health Minister Marjorie Michel highlighted the timeliness of Reimer’s appointment, pointing out the resurgence of vaccine-preventable diseases, including measles, alongside the ongoing threats posed by avian influenza A (H5N1), HIV, and tuberculosis. “We are also facing the ongoing impacts of the illegal drug crisis and the harmful effects of false health information,” she stated, signalling the multifaceted challenges that Reimer will need to address.
The Measles Outbreak and Vaccine Hesitancy
Reimer has a personal connection to the current measles outbreak, having grown up in a small town affected by rising vaccine hesitancy. She advocates for the need for partnerships across all levels—community leaders to federal authorities—to tackle this issue effectively. The loss of Canada’s measles elimination status, held since 1998, is alarming to public health experts, with similar risks looming for the United States and Mexico.
“The incredibly infectious nature of measles, combined with the rise in misinformation and vaccine hesitancy, makes this situation predictable,” Reimer explained. This context underscores the necessity for a collaborative approach to public health messaging and community engagement.
Navigating the Landscape of Information
Misinformation is not confined to social media; it permeates various facets of information dissemination. Reimer noted the impact of external influences, particularly the shifts in the American health landscape following the Trump administration’s funding cuts to essential research institutions. This has complicated the flow of reliable information between Canada and its southern neighbour. “We need to ensure that Canada is sharing trustworthy information,” she affirmed, while acknowledging the ongoing contributions of dedicated professionals within the American system.

Reimer’s extensive background in public health, including her research on sexually transmitted diseases and drug-related harms, equips her with a well-rounded perspective on the complexities of health communication. Her commitment to addressing these challenges is echoed by Nancy Hamzawi, president of the Public Health Agency of Canada, who expressed confidence in Reimer’s ability to advance public health initiatives in Canada.
A Commitment to Inclusive Health Leadership
Dr. Reimer’s tenure as past president of the Canadian Medical Association (CMA) included delivering a formal apology for the medical profession’s historical harms to Indigenous Peoples. Current CMA president Dr. Margot Burnell praised Reimer’s calm leadership during the pandemic, highlighting her advocacy for accessible healthcare and her efforts against misinformation.
As Canada’s public health landscape evolves, Reimer’s leadership will be pivotal in navigating the complexities of health misinformation and rebuilding the trust that has been eroded over recent years.
Why it Matters
The appointment of Dr. Joss Reimer as Chief Public Health Officer comes at a crucial time for Canada, as the nation grapples with the dual challenges of misinformation and public trust. Her commitment to transparent communication and community engagement will be essential in addressing the rising tide of vaccine hesitancy and preventable diseases. With health misinformation posing a significant threat to public safety, Reimer’s leadership represents a renewed hope for a more informed and healthier Canada. By fostering trust and collaboration, she aims to create a resilient public health framework capable of weathering future crises.