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Dr. Joss Reimer has been appointed as Canada’s new chief public health officer, bringing to the role a commitment to tackle health misinformation and rebuild public trust in health institutions. Announced on Friday, her three-year appointment comes at a pivotal moment for the country, as it grapples with the repercussions of the COVID-19 pandemic and a surge in vaccine-preventable diseases.
Addressing Health Misinformation
In her first interview following the announcement, Reimer, a native of Manitoba, emphasised the urgent need for a proactive federal response to combat the rapid spread of false health information. “One of the biggest challenges with health misinformation is the speed at which it changes,” she commented. “It doesn’t take much time to create a lie.”
During the COVID-19 pandemic, trust in various institutions, particularly in the health sector, experienced significant erosion. Reimer acknowledged how the pandemic’s hardships led to widespread concern and uncertainty among Canadians. “People were losing jobs and income, and many were separated from loved ones. Regardless of whether the decisions made were the right ones, it was an incredibly challenging time,” she explained. Rebuilding that trust will require a sustained effort. “We have a lot of trust-building to do, and it’s going to take years,” she added.
A Critical Moment for Public Health
Reimer takes over from Dr. Theresa Tam, who retired in June after eight years in the role. Tam became a familiar face to Canadians during the pandemic, providing regular updates on the evolving situation. Reimer also held a prominent position during this time as the chief medical officer for the Winnipeg health authority and led Manitoba’s COVID-19 vaccine implementation task force.

In a statement, Health Minister Marjorie Michel highlighted the significance of Reimer’s appointment, noting that Canada is currently facing a resurgence of diseases that can be prevented through vaccination, such as measles. She also underscored the ongoing threats of avian influenza A (H5N1), HIV, tuberculosis, and the impact of the illegal drug crisis, compounded by the spread of misinformation.
Focus on Community Engagement
Reimer brings a unique perspective to the issue of vaccine hesitancy, particularly in relation to the recent measles outbreak. “I come from a small town that is part of the measles outbreak, where we have seen a fair bit of vaccine hesitancy,” she said. Her approach will involve forging partnerships that stretch from community leaders to the federal government to effectively combat misinformation and engage the public.
The measles outbreak has persisted long enough that Canada has lost its elimination status for the disease, a troubling development that has alarmed public health experts nationwide. “Given how incredibly infectious measles is, combined with the rise in misinformation and vaccine hesitancy, it’s not surprising that cases are increasing,” Reimer stated.
Rebuilding Trust on Both Sides of the Border
Public health officials have warned that misinformation is not confined to social media platforms. In December, Minister Michel expressed concerns regarding the reliability of American health institutions for Canadians, following significant funding cuts and the promotion of false information about vaccines during the Trump administration.

Reimer believes that Canada must cultivate its own sources of trustworthy information while maintaining collaborative efforts with American health professionals. “I know there are still incredible individuals in the American system doing wonderful work, and there are many avenues through which we can continue to collaborate,” she noted.
With a master’s degree in public health and a history of research on sexually transmitted diseases and drug-related harms, Reimer is well-equipped for her new role. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s leadership during a time when strong, science-driven guidance is essential for public health.
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 all Canadians,” Burnell remarked.
Reimer’s tenure is set to commence on April 1, as she embarks on the vital mission of restoring public confidence in health authorities and ensuring that Canadians are equipped with accurate health information.
Why it Matters
Dr. Joss Reimer’s appointment as chief public health officer is not just a change in leadership; it represents a critical juncture for Canada’s public health landscape. In an era where misinformation poses a tangible threat to community health, her focus on rebuilding trust and engaging with local leaders could mark a transformative approach to public health. With the resurgence of vaccine-preventable diseases and the ongoing challenges of the pandemic, her leadership could be pivotal in steering Canada towards a healthier, more informed future. The stakes have never been higher, and Reimer’s commitment to counter misinformation is a beacon of hope for the nation’s health trajectory.