Dr. Joss Reimer is stepping into the role of Chief Public Health Officer, a position she will officially assume on April 1. As she takes the helm, Reimer is prioritising the fight against health misinformation and aims to restore public trust in health institutions, a task made more urgent in the wake of the COVID-19 pandemic. In a recent interview following the announcement of her three-year appointment, she underscored the necessity for the federal government to proactively tackle false health narratives that have proliferated in recent years.
Confronting the Challenge of Misinformation
Reimer, a native of Manitoba, expressed her concerns about the rapid evolution of health misinformation. “One of the biggest challenges with health misinformation is the speed at which it changes,” she stated, highlighting how quickly falsehoods can emerge and spread. This issue, she believes, has significantly undermined public confidence in health messaging.
The COVID-19 pandemic exposed vulnerabilities in public perception of health authorities. Reimer reflected on this erosion of trust, noting, “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.” Rebuilding that trust will be a long and arduous process, one that she estimates will require years of dedicated effort.
A Critical Time for Public Health
Reimer’s appointment comes at a pivotal moment for Canada’s public health landscape. With the recent resurgence of vaccine-preventable diseases like measles and ongoing challenges posed by avian influenza, HIV, and the illegal drug crisis, Health Minister Marjorie Michel emphasised the significance of Reimer’s role. “We are facing a resurgence of vaccine-preventable diseases… the harmful impacts of false health information,” she stated, reinforcing the urgency of the situation.

Reimer’s insights into the current measles outbreak are particularly poignant, given her background in the region affected by vaccine hesitancy. “I come from a small town which is part of the measles outbreak,” she shared. Her perspective highlights the importance of grassroots partnerships, stating, “We need to have partnerships from on the ground, from community leaders all the way up to the federal government.”
The Road Ahead: Collaboration and Leadership
The loss of Canada’s measles elimination status—an achievement maintained since 1998—has alarmed public health experts. Reimer acknowledged the rise in measles cases as unsurprising, given the disease’s highly infectious nature and the increasing prevalence of misinformation and vaccine hesitancy.
Canada’s public health officials are also contending with misinformation that extends beyond social media. In December, Michel remarked on the erosion of reliable health information sources resulting from political changes in the United States. Reimer maintains that Canada must assert its independence in disseminating trustworthy information, stating, “I know that there are still really amazing people in the American system doing wonderful work… there’s a lot of ways that we can continue to work together.”
With a master’s degree in public health and a history of research focused on sexually transmitted diseases and drug-related harms, Reimer brings a wealth of experience to her new position. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s ability to lead at this crucial juncture, 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, noting, “At the CMA, Reimer led the fight against false health information and advocated strongly for solutions to improve access to care for everyone in Canada.”
Why it Matters
The appointment of Dr. Joss Reimer as Canada’s Chief Public Health Officer represents a critical step in addressing the multifaceted challenges facing public health today. Her commitment to combating misinformation and rebuilding trust is not just timely; it is essential for the health and safety of Canadians. In an era where accurate health information is paramount, Reimer’s leadership could play a pivotal role in revitalising public confidence and ensuring that the lessons learned during the pandemic lead to a more resilient health system. The stakes are high, and her proactive approach will be crucial in navigating the complexities of public health in the years to come.
