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Dr. Joss Reimer has been appointed as Canada’s new chief public health officer, a role she will officially assume on April 1. With a focus on addressing health misinformation and rebuilding public trust, Reimer’s appointment comes at a pivotal moment for Canada, marked by a resurgence of vaccine-preventable diseases and the lingering impacts of the COVID-19 pandemic.
Priorities in Public Health
In her first public comments following the announcement of her three-year term, Reimer emphasised the urgent need for the federal government to adopt a proactive stance against misinformation. “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. She expressed concern about the erosion of trust in health institutions, a sentiment that has been echoed by many since the onset of the pandemic. “We have a lot of trust-building that we’re going to need to do that’s going to take years,” she noted.
Reimer’s predecessor, Dr. Theresa Tam, became a notable figure during the pandemic, providing Canadians with vital updates on public health measures. After serving in this role for eight years, Tam retired in June. Reimer also played a significant role during the pandemic as the chief medical officer for the Winnipeg health authority and as the medical lead for Manitoba’s COVID-19 vaccine implementation task force.
Current Health Landscape
Health Minister Marjorie Michel highlighted the challenges facing the Public Health Agency of Canada, stating that the country is grappling with a resurgence of diseases like measles, as well as threats from avian influenza A (H5N1), HIV, and tuberculosis. The ongoing drug crisis, compounded by the spread of misinformation, poses additional challenges.

Reimer commented on the alarming measles outbreak, which has led to Canada losing its measles elimination status, a designation it held since 1998. “I come from a small town which is part of the measles outbreak and where we have seen a fair bit of vaccine hesitancy,” she revealed. The rise in measles cases is attributed to both the highly infectious nature of the disease and increasing public reluctance to vaccinate, fuelled by misinformation.
The Role of Misinformation
Misinformation surrounding health continues to pose a significant threat, extending beyond social media platforms. In December, Minister Michel remarked on the diminished reliability of American health institutions as sources of information due to funding cuts and the promotion of false narratives regarding vaccines. “When [Donald Trump] took office, he slapped us in our face and changed the long-standing relationship between the two nations,” she stated.
Reimer affirmed the necessity for Canada to establish its own reliable health information systems. “I know that there are still really amazing people in the American system doing wonderful work, and I think there’s a lot of ways that we can continue to work together,” she said, indicating her commitment to collaboration while prioritising Canadian health integrity.
Vision for the Future
With a master’s degree in public health and extensive experience in addressing sexually transmitted diseases and drug-related harms, Reimer brings a wealth of knowledge to her new role. Nancy Hamzawi, the president of the Public Health Agency of Canada, expressed confidence in Reimer’s leadership, stating, “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.”

Dr. Margot Burnell, the current president of the Canadian Medical Association, praised Reimer for her calm and measured leadership during the pandemic, highlighting her advocacy against false health information and her commitment to improving healthcare access across Canada.
As she prepares to take the helm, Reimer is poised to face significant challenges, but her experience and dedication may well lead to the restoration of public trust in health institutions.
Why it Matters
Dr. Joss Reimer’s appointment as chief public health officer arrives at a crucial juncture for Canada’s health landscape. Amid rising vaccine hesitancy and public distrust, her leadership will be essential in navigating the complexities of health misinformation. Her proactive approach to rebuilding trust and ensuring accurate health information dissemination will not only protect Canadians from preventable diseases but also foster a more resilient public health framework for the future. In an era where misinformation spreads rapidly, Reimer’s commitment to science-based communication may be the key to safeguarding the health of all Canadians.