Dr. Joss Reimer, the newly appointed Chief Public Health Officer for Canada, has identified addressing health misinformation and restoring public trust as her foremost objectives. Announced on Friday, her three-year tenure as head of the Public Health Agency of Canada arrives at a critical juncture, where the shadows of the COVID-19 pandemic still loom large over public perception of health institutions.
A Call to Action Against Misinformation
In her first public statements since the appointment, Reimer emphasised the urgent need for a proactive governmental strategy to counteract the rapidly evolving landscape of health misinformation. “One of the biggest challenges with health misinformation is the speed at which it changes,” she remarked. “It doesn’t take a lot of time to come up with a lie.”
The pandemic notably eroded trust in public health communications, a sentiment Reimer acknowledged. The hardships faced by Canadians—job losses, separation from loved ones, and general uncertainty—have contributed to a significant decline in confidence in health authorities. “We have a lot of trust-building that we’re going to need to do that’s going to take years,” she stated, highlighting the long road ahead for public health officials.
Transitioning Leadership in Public Health
Reimer steps into this pivotal role following the retirement of Dr. Theresa Tam, who served for eight years and became a prominent figure for Canadians seeking clarity during the pandemic. Tam’s departure marks the end of an era, and Reimer, who previously held the position of Chief Medical Officer for the Winnipeg health authority, has her work cut out for her.

During her tenure in Manitoba, Reimer played a vital role in the province’s COVID-19 vaccination task force, which has given her firsthand experience in managing public health communications amidst crisis. Health Minister Marjorie Michel noted the significance of Reimer’s appointment, stating that Canada is currently facing a resurgence of vaccine-preventable diseases and the continuous challenges posed by misinformation.
Overcoming Vaccine Hesitancy
Reimer’s unique perspective on the current measles outbreak has been shaped by her experiences in a small town affected by vaccine hesitancy. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she stressed. The fact that Canada has lost its measles elimination status—a distinction held since 1998—serves as a stark warning for public health in the country.
The rise in measles cases is not surprising given the disease’s highly infectious nature and the increase in vaccine hesitancy fuelled by misinformation. As Reimer noted, “It’s incredibly infectious, given that there is more misinformation and more vaccine hesitancy.”
The Role of Trustworthy Information
Public health officials across Canada have been vocal about the dangers of misinformation, which extends beyond social media platforms. In December, Minister Michel pointed out that U.S. health institutions have become unreliable sources of information due to a reduction in funding and a shift towards promoting false narratives about vaccines during the Trump administration.

Reimer believes Canada must forge its own path in disseminating accurate health information. “I know that there are still really amazing people in the American system doing wonderful work,” she said, acknowledging the potential for collaboration while stressing the importance of Canadian independence in health communications.
A Vision for Public Health
With a master’s degree in public health and experience in researching sexually transmitted diseases and drug-related harms, Reimer arrives at her new post well-equipped to lead. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s vision and commitment to advancing public health initiatives.
Dr. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer for her calm and measured leadership during the pandemic. “She led the fight against false health information and advocated strongly for solutions to improve access to care for everyone in Canada,” Burnell remarked.
Reimer’s official term will commence on April 1, and as she steps into her new role, the expectations are high.
Why it Matters
Dr. Joss Reimer’s appointment comes at a crucial time for Canada’s public health landscape. With a rising tide of vaccine-preventable diseases and a persistent undercurrent of misinformation, her leadership will be vital in restoring public confidence and ensuring that Canadians receive accurate, trustworthy health information. The path ahead is fraught with challenges, but if successful, Reimer’s initiatives could significantly enhance the health and well-being of communities nationwide.