In a pivotal moment for Canadian public health, Dr. Joss Reimer has been appointed as the new Chief Public Health Officer, with a mandate to address rampant health misinformation and rebuild trust in health institutions. Announced on Friday, Reimer’s three-year tenure begins at a critical juncture, as Canada grapples with the lingering effects of the COVID-19 pandemic and increasing vaccine hesitancy.
Confronting the Challenge of Misinformation
Dr. Reimer, a Manitoba native and former chief medical officer for the Winnipeg health authority, emphasised the urgent need for a proactive federal strategy to counteract false health narratives. “One of the biggest challenges with health misinformation is the speed at which it changes,” she noted. “It doesn’t take much time to come up with a lie.” This adaptability of misinformation, particularly during the pandemic, has severely undermined public trust in health institutions.
The COVID-19 crisis, with its myriad challenges—from job losses to social isolation—has left many Canadians sceptical of the very officials tasked with guiding them through public health crises. Reimer acknowledged this erosion of trust, stating, “We have a lot of trust-building that we’re going to need to do that’s going to take years.”
A Legacy of Leadership
Reimer steps into her new role following Dr. Theresa Tam, who retired in June after an eight-year tenure marked by daily briefings that made her a household name. During her own time in public health, Reimer was instrumental in Manitoba’s COVID-19 vaccine rollout, reinforcing her credentials as a capable leader in times of crisis.

Health Minister Marjorie Michel has expressed confidence in Reimer’s abilities to navigate the complexities of public health in Canada today. “Dr. Reimer joins the Public Health Agency at a critical time,” she stated, highlighting the resurgence of vaccine-preventable diseases like measles and the challenges posed by the illegal drug crisis.
A Personal Perspective on Vaccine Hesitancy
Reimer’s experience with the measles outbreak in her hometown has shaped her understanding of vaccine hesitancy. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she explained. The return of measles to Canada, after losing its elimination status and facing a similar threat in the United States and Mexico, is a stark reminder of the consequences of misinformation.
“As the disease is incredibly infectious, it’s not surprising to see cases rise, especially with the increased misinformation and vaccine hesitancy,” Reimer added. Her insights underscore the importance of community engagement and trust in combating public health crises.
The Role of Collaborative Leadership
Reimer’s vision for the Public Health Agency includes fostering collaboration at all levels of government and health institutions. She pointed out that Canadian health officials face misinformation not only from social media but also from a broader context, including challenges posed by the United States’ public health messaging.

“I know there are still really amazing people in the American system doing wonderful work,” she remarked, noting the need for Canada to establish a reliable, independent source of health information. This is vital for ensuring that Canadians receive accurate guidance, particularly in an era where misinformation can spread rapidly.
Why it Matters
Dr. Joss Reimer’s appointment signals a renewed commitment to restoring trust in public health and addressing the critical issue of misinformation that has plagued Canada during recent years. Her leadership comes at a time when the health of the nation is at stake, with rising vaccine-preventable diseases and a public increasingly wary of official narratives. By prioritising transparency and community engagement, Reimer has the potential to reshape the landscape of public health in Canada, ensuring that citizens receive the accurate information necessary to make informed health decisions. As we look to the future, her role will be crucial in navigating the intersections of public health policy, community trust, and the relentless tide of misinformation.