Canada has appointed Dr. Joss Reimer as the new Chief Public Health Officer, a role that comes with significant challenges, particularly in tackling health misinformation and restoring public trust. In her first interview following the announcement of her three-year term, Dr. Reimer emphasised the urgent need for a proactive federal strategy to combat the proliferation of false health information, a problem that has grown alarmingly during the COVID-19 pandemic.
Combating Health Misinformation
Dr. Reimer, a native of Manitoba, voiced her concerns about the rapid evolution of health 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. This ongoing issue has contributed to a significant erosion of public trust in health institutions, a trend exacerbated by the hardships faced during the pandemic.
Reflecting on the tumultuous period, she noted, “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. We have a lot of trust-building that we’re going to need to do that’s going to take years.”
The Legacy of Dr. Theresa Tam
Dr. Reimer steps into her role following the retirement of Dr. Theresa Tam, who became a prominent figure in public health communication during the pandemic. Dr. Tam provided Canadians with consistent updates on the evolving situation, becoming a household name in the process. Dr. Reimer, who served as the Chief Medical Officer for the Winnipeg health authority and led Manitoba’s COVID-19 vaccination efforts, is poised to continue this legacy of transparent communication.

Minister of Health Marjorie Michel highlighted the crucial timing of Dr. Reimer’s appointment, citing a resurgence of diseases preventable by vaccines, including measles. “Canada is facing a resurgence of vaccine-preventable diseases such as measles, the threats posed by avian influenza A (H5N1), HIV and tuberculosis, the ongoing impacts of the illegal drug crisis and the harmful impacts of false health information,” she stated.
Addressing Vaccine Hesitancy
Dr. Reimer brings a personal understanding of the current measles outbreak, having connections to a small town that has experienced significant vaccine hesitancy. She emphasised the importance of collaboration between community leaders and government entities to address these concerns. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she asserted.
The resurgence of measles is particularly troubling, as Canada has lost its measles elimination status, a position it had maintained since 1998. Public health experts are alarmed, noting that both the United States and Mexico are at risk of similar status losses.
The Role of Information in Public Health
Health officials have acknowledged that misinformation is not confined to social media platforms. In December, Minister Michel remarked that American health institutions have become less reliable sources of information for Canadians, largely due to the previous U.S. administration’s actions that undermined scientific credibility. Dr. Reimer reinforced the necessity for Canada to establish and disseminate trustworthy health information independently.

“I know that there are still really amazing people in the American system doing wonderful work,” she said, recognising the potential for collaboration while underscoring the need for Canadian autonomy in public health messaging.
Dr. Reimer’s academic credentials include a master’s degree in public health, with a focus on sexually transmitted diseases and drug-related harms, further bolstering her expertise in the field.
Looking Ahead
Nancy Hamzawi, the President of the Public Health Agency of Canada, expressed her enthusiasm for working with Dr. Reimer, 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, President of the Canadian Medical Association, praised Dr. Reimer for her calm and measured leadership during the pandemic, highlighting her efforts to combat health misinformation and improve access to care across Canada.
Dr. Reimer is set to officially commence her responsibilities on April 1, as she embarks on a mission to rebuild trust and promote public health in a landscape fraught with misinformation.
Why it Matters
The appointment of Dr. Joss Reimer as Chief Public Health Officer is pivotal for Canada’s public health landscape, particularly in light of the ongoing challenges posed by misinformation and vaccine hesitancy. Her focus on rebuilding trust and fostering collaboration at all levels of society is essential for safeguarding public health. In an era where misinformation can spread rapidly, her leadership could be instrumental in ensuring that Canadians receive accurate health information, ultimately contributing to healthier communities and a more resilient healthcare system.