In a pivotal moment for public health in Canada, Dr. Joss Reimer has been appointed as the country’s chief public health officer. Announced on Friday, Reimer’s three-year tenure will focus on addressing the surge of health misinformation and restoring trust in health institutions, particularly in the wake of the COVID-19 pandemic. This appointment comes at a time when Canadians are increasingly confronted by false information concerning health matters, which poses significant risks to community well-being.
Addressing the Misinformation Crisis
Dr. Reimer emphasised the urgent need for a proactive approach to combat the rapid spread of health misinformation. In her first public statements following her appointment, she noted, “One of the biggest challenges with health misinformation is the speed at which it changes.” This recognition underscores the dynamic nature of misinformation, which can proliferate with alarming swiftness, often outpacing the dissemination of accurate information.
The pandemic has significantly eroded public trust in health institutions, a reality Reimer is acutely aware of. “There was so much difficulty — people were losing jobs and income, people were being separated from loved ones,” she explained. “And so we have a lot of trust-building that we’re going to need to do that’s going to take years.” This long-term commitment to rebuilding trust will be essential in ensuring that Canadians feel confident in the health information they receive.
The Legacy of Dr. Theresa Tam
Reimer steps into her role following the retirement of Dr. Theresa Tam, who held the position for eight years and became a familiar figure during the pandemic through her regular updates on public health guidelines. Tam’s leadership has set a high bar, and Reimer is keenly aware of the challenges and responsibilities that lie ahead.

During her tenure as the chief medical officer for the Winnipeg health authority, Reimer gained valuable experience, notably leading the COVID-19 vaccine implementation task force in Manitoba. Her background equips her with a unique perspective on the current public health landscape.
The Rise of Vaccine-Preventable Diseases
Health Minister Marjorie Michel highlighted the critical nature of Reimer’s appointment, outlining the resurgence of vaccine-preventable diseases such as measles and the looming threats posed by avian influenza and HIV. “Canada is facing a resurgence of vaccine-preventable diseases… the ongoing impacts of the illegal drug crisis and the harmful impacts of false health information,” she stated.
Reimer’s understanding of the current measles outbreak is personal; she hails from a small town experiencing significant vaccine hesitancy. She advocates for community-based partnerships, emphasising the importance of collaboration at all levels, from local leaders to federal authorities, to address these pressing health issues.
The Importance of Localised Health Communication
In responding to the ongoing measles outbreak—which has led to Canada losing its measles elimination status for the first time since 1998—Reimer acknowledged the challenge posed by misinformation. “It’s not a shock that measles cases are on the rise, given how incredibly infectious the disease is and given that there is more misinformation and more vaccine hesitancy,” she noted. This situation illustrates the critical need for clear, accurate communication to combat the spread of falsehoods.

Moreover, Reimer highlighted that misinformation is not confined to social media platforms; it encompasses broader societal narratives that can distort public perception of health information. As Canada’s public health landscape continues to evolve, it is imperative that the federal government cultivates a robust framework for sharing trustworthy information.
Why it Matters
Dr. Joss Reimer’s appointment as chief public health officer represents a crucial step in addressing the twin challenges of health misinformation and public trust. As Canada grapples with the resurgence of vaccine-preventable diseases and the continuing impact of the COVID-19 pandemic, Reimer’s experience and commitment to community engagement will be vital in fostering a healthier society. Her leadership will not only aim to dispel the myths that threaten public health but also work tirelessly to rebuild the trust that has been lost, ensuring that all Canadians have access to accurate and reliable health information. In an era where misinformation can spread like wildfire, having a dedicated advocate at the helm of public health is more important than ever.