Dr. Joss Reimer, a seasoned public health professional, has been appointed as Canada’s chief public health officer, stepping into a role crucial for rebuilding trust in health institutions and combating rampant misinformation. As she prepares to begin her three-year term on April 1, Reimer emphasised the pressing need for the federal government to adopt proactive measures against the spread of health-related falsehoods.
A Call for Action Against Misinformation
In a recent interview, Reimer highlighted the challenges posed by health misinformation, particularly its rapid dissemination. “One of the biggest challenges with health misinformation is the speed at which it changes,” she noted. The pandemic era has illustrated how quickly false narratives can take hold, complicating public understanding and response.
Reimer acknowledged that the erosion of trust in health authorities during COVID-19 has created a long road ahead for recovery. “Because 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,” she reflected. “We have a lot of trust-building that we’re going to need to do that’s going to take years.”
Experience in Crisis Management
The pandemic thrust public health officials into the limelight, with Dr. Theresa Tam, Reimer’s predecessor, becoming a familiar figure as she provided regular updates on the evolving health crisis. Tam retired in June after an impactful eight-year tenure.

Reimer, who served as the chief medical officer for the Winnipeg health authority during the pandemic, also played a vital role in Manitoba’s COVID-19 vaccine rollout. Her firsthand experiences during this tumultuous period have equipped her with unique insights into the challenges facing public health today.
Addressing Vaccine Hesitancy and Disease Resurgence
Health Minister Marjorie Michel underscored the significance of Reimer’s appointment at a time when Canada faces a resurgence of vaccine-preventable diseases, including measles. This alarming trend has coincided with the deterioration of Canada’s measles elimination status, lost after 25 years, a situation echoed by health experts across the nation.
Reimer shared her personal connection to the ongoing measles outbreak, noting her roots in a small town that has witnessed significant vaccine hesitancy. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she emphasised.
With the rising cases attributed to the highly contagious nature of measles, Reimer expressed concerns that misinformation and vaccine hesitancy have compounded the issue. “It’s not a shock that measles cases are on the rise,” she said, reinforcing the urgent need for trustworthy health communications.
Re-establishing Trust in Health Institutions
The challenge of misinformation extends beyond social media, with public health officials warning that the credibility of traditional sources is also at stake. Michel previously remarked on the impact of U.S. health institutions, which have lost reliability due to significant funding cuts and the promotion of misleading information during the Trump administration.

Reimer stressed the importance of Canada developing its own credible health information resources. “I know that there are still really amazing people in the American system doing wonderful work, and so I think that there are a lot of ways that we can continue to work together,” she stated, advocating for international collaboration while prioritising Canadian integrity in health messaging.
Reimer’s extensive background includes a master’s degree in public health and crucial research on sexually transmitted diseases and drug-related harms. As the former president of the Canadian Medical Association, she publicly apologised to Indigenous Peoples for past medical injustices, demonstrating her commitment to addressing historical health disparities.
Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s leadership capabilities. “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,” she stated.
Why it Matters
Dr. Joss Reimer’s appointment comes at a critical juncture for Canada, where health misinformation poses a significant threat to public safety and trust in health systems. As she embarks on this vital role, her efforts will not only aim to counteract misinformation but also strive to mend the fractured relationship between Canadians and their health authorities. Reimer’s commitment to community engagement and evidence-based communication will be essential in fostering a healthier, more informed society, ultimately benefiting public health outcomes across the nation.