Dr. Joss Reimer has been appointed as Canada’s new Chief Public Health Officer, taking on the critical task of addressing health misinformation and rebuilding public confidence in health institutions. Announced on Friday, Reimer’s three-year term comes at a pivotal moment for the nation’s health landscape, particularly following the widespread challenges posed by the COVID-19 pandemic.
A Proactive Approach to Misinformation
In her first interview since the announcement, Reimer emphasised the urgency of countering the rampant spread of health misinformation. “One of the biggest challenges with health misinformation is the speed at which it changes,” she remarked. “Creating a lie takes little time, and we must respond quickly.”
She acknowledged the significant erosion of trust in public institutions throughout the pandemic. “People faced immense difficulties—job losses, separation from loved ones. Whether the decisions made were correct or not, the impact was profound,” Reimer reflected. “Restoring trust will require sustained efforts over many years.”
The Legacy of Dr. Theresa Tam
Reimer steps into a role previously held by Dr. Theresa Tam, who retired in June after eight years of service. Tam became a well-known figure during the pandemic, providing daily updates to Canadians navigating the evolving health crisis. Her departure marks a significant transition for the Public Health Agency of Canada.

During the pandemic, Reimer herself played a key role as the chief medical officer for the Winnipeg health authority and led the COVID-19 vaccine implementation task force in Manitoba. Her experience positions her uniquely to tackle the ongoing health challenges facing Canada.
Addressing Vaccine Hesitancy and Disease Resurgence
Health Minister Marjorie Michel highlighted the critical nature of Reimer’s appointment, noting the resurgence of vaccine-preventable diseases such as measles, alongside threats posed by avian influenza, HIV, and tuberculosis. The illegal drug crisis and the damaging effects of misinformation further complicate the public health landscape.
Reimer pointed to her personal connection to the measles outbreak, which has led to Canada losing its measles elimination status for the first time since 1998. “I come from a small town affected by the outbreak, and we have seen significant vaccine hesitancy. It’s essential to foster partnerships from community leaders right up to federal authorities,” she stated.
The Importance of Reliable Information
Reimer underscored that misinformation extends beyond social media platforms. In December, Minister Michel expressed concerns that American health institutions have become less reliable sources of information due to a lack of funding and promotion of false narratives about vaccines. “We need to ensure that Canada stands independently, sharing trustworthy information with our citizens,” Reimer affirmed.

While acknowledging the challenges posed by misinformation, Reimer also recognised the commitment of dedicated professionals within the American health system. “There are still outstanding individuals doing incredible work, and we can find avenues for collaboration,” she noted.
Reimer’s academic background includes a master’s degree in public health, with research focusing on sexually transmitted diseases and drug-related harms. Her previous role as president of the Canadian Medical Association saw her advocate strongly against health misinformation and promote equitable access to care across Canada.
A Call for Strong Leadership
Nancy Hamzawi, president of the Public Health Agency of Canada, expressed her enthusiasm for working alongside Reimer. “Strong, science-driven leadership is more crucial than ever, and I am confident her vision will advance the health and well-being of Canadians,” Hamzawi stated.
Dr. Margot Burnell, current president of the Canadian Medical Association, praised Reimer for her calm and effective leadership during the pandemic. Burnell highlighted Reimer’s efforts to combat false health narratives and her dedication to improving healthcare access for all Canadians.
Reimer will officially begin her role on April 1, stepping into a position that demands both expertise and compassion in addressing the complex health challenges facing the nation.
Why it Matters
The appointment of Dr. Joss Reimer as Canada’s Chief Public Health Officer is not merely a change in leadership; it represents a critical opportunity to mend the frayed trust between the public and health institutions. In an era where misinformation can spread rapidly and undermine public health efforts, her commitment to proactive communication and community engagement is essential. By fostering partnerships and ensuring the dissemination of accurate health information, Reimer aims to not only combat misinformation but also safeguard the health of Canadians for years to come.