Dr. Joss Reimer has officially stepped into her role as Canada’s chief public health officer, bringing with her a commitment to combat health misinformation and restore public confidence in health institutions. Announced on Friday, Reimer, who hails from Manitoba, emphasised the urgent need for the federal government to adopt proactive strategies to tackle the rapid 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 stated in an interview shortly after her appointment.
The Legacy of COVID-19 and Eroded Trust
Reimer acknowledged the significant erosion of trust in public health institutions during the COVID-19 pandemic. The disruptions to daily life, with many facing job losses and separation from loved ones, contributed to widespread skepticism. “There was so much difficulty — people were losing jobs and income, people were being separated from loved ones. And whether or not those were right decisions, it was hard,” she reflected. Reimer underscored the monumental task ahead, asserting that rebuilding trust will require sustained effort over several years.
Throughout the pandemic, public health officials became central figures in Canadians’ lives, with Dr. Theresa Tam, Reimer’s predecessor, emerging as a household name through her regular updates on evolving health guidance. Tam concluded her tenure in June after eight impactful years, leaving behind a legacy of resilience and dedication.
A Focus on Vaccine-Preventable Diseases
Reimer’s appointment comes at a pivotal moment, as Canada grapples with a resurgence of diseases that can be prevented through vaccination, such as measles. Health Minister Marjorie Michel highlighted the pressing issues facing the country, including threats from avian influenza A (H5N1), HIV, tuberculosis, and the ongoing drug crisis, compounded by the damaging effects of misinformation. “Canada is facing a resurgence of vaccine-preventable diseases,” Michel stated, indicating the gravity of the situation.

With personal ties to the measles outbreak, Reimer offered a unique perspective, noting her roots in a community experiencing vaccine hesitancy. “I come from a small town which is part of the measles outbreak and where we have seen a fair bit of vaccine hesitancy. We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she explained. The loss of Canada’s measles elimination status, held since 1998, is alarming to public health experts nationwide, particularly as the disease is known for its high transmissibility.
The Fight Against Misinformation
Health officials have raised concerns that misinformation extends far beyond social media platforms. In a previous statement, Minister Michel remarked on the erosion of trust in American health institutions, attributing it to the previous U.S. administration’s funding cuts to scientific bodies and the promotion of false narratives about vaccines. “U.S. President Donald Trump slapped us in the face and changed the long-standing relationship between the two nations,” she stated, highlighting the need for Canada to establish its own trustworthy information channels.
Reimer echoed this sentiment, advocating for Canada to develop a self-sustaining system of reliable health information. “I know that there are still really amazing people in the American system doing wonderful work, and so I think that there’s a lot of ways that we can continue to work together,” she noted, reflecting her commitment to collaboration while emphasising the necessity for Canadian independence in public health communication.
A Vision for the Future
Armed with a master’s degree in public health and experience as the chief medical officer for the Winnipeg health authority, Reimer is well-prepared to lead Canada’s health response. Her tenure includes significant contributions to Manitoba’s COVID-19 vaccination strategy and a history of advocating for improved health access.

Nancy Hamzawi, the president of the Public Health Agency of Canada, expressed confidence in Reimer’s leadership. “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,” she stated.
Additionally, Dr. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer’s calm and measured leadership during the pandemic and her commitment to fighting misinformation. Reimer’s past role as president of the CMA saw her delivering a formal apology to Indigenous Peoples for the historical harms caused by the medical profession, showcasing her dedication to justice and equity in health.
Dr. Joss Reimer’s term as chief public health officer will officially begin on April 1, marking a new chapter in Canada’s public health landscape.
Why it Matters
The appointment of Dr. Joss Reimer comes at a crucial juncture for public health in Canada. As misinformation proliferates and trust in health institutions dwindles, her leadership will be essential in not only addressing immediate health crises but also in fostering a more informed and resilient public. Reimer’s commitment to collaboration and transparency offers hope for a future where Canadians can confidently rely on sound health information, ultimately contributing to better health outcomes for all.