Dr. Joss Reimer is set to assume the role of Canada’s chief public health officer, a position she believes carries the vital responsibility of tackling health misinformation and rebuilding public confidence. Announced on Friday, Reimer’s three-year appointment is timely, coinciding with increasing public concern regarding vaccine hesitancy and the resurgence of preventable diseases.
A Call for Action Against Misinformation
In her initial remarks following the announcement, Reimer emphasised the need for a vigorous response to health misinformation, which she describes as a rapidly evolving challenge. “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 acknowledgement highlights a critical gap that has emerged in public health communication, particularly in the wake of the COVID-19 pandemic, which has left many questioning the reliability of health institutions.
Reimer noted that public trust in health authorities significantly eroded during the pandemic, driven by widespread social and economic upheaval. “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, adding that restoring this trust will be a lengthy process requiring years of dedicated effort.
Lessons from the Pandemic
The COVID-19 crisis thrust public health officials into the limelight, with Dr. Theresa Tam, Reimer’s predecessor, becoming a prominent figure as she provided near-daily updates to a concerned nation. After eight years in the role, Tam retired in June, leaving Reimer to navigate a landscape still fraught with uncertainty.

During the pandemic, Reimer served as the chief medical officer for the Winnipeg health authority and led the province’s COVID-19 vaccine implementation task force. Her frontline experience during this period has equipped her with a unique perspective on the ongoing health challenges facing Canadians.
Addressing Vaccine Hesitancy and Disease Resurgence
Health Minister Marjorie Michel underscored the urgency of Reimer’s new role, stating that Canada is currently facing “a resurgence of vaccine-preventable diseases such as measles,” alongside the threats posed by avian influenza, HIV, and tuberculosis. The recent rise in measles cases, which has resulted in Canada losing its measles elimination status for the first time since 1998, is particularly alarming to public health experts.
Reimer’s personal connection to the issue is significant; she hails from a small town that has experienced vaccine hesitancy amidst the current outbreak. “We need to have partnerships from on the ground, from community leaders all the way up to the federal government,” she remarked, indicating her intent to foster collaboration across various levels of society to combat misinformation and improve vaccination rates.
Moving Forward with Trustworthy Information
The challenge of misinformation extends beyond social media platforms. In December, Michel noted that American health institutions, once reliable sources for Canadians, have faltered in trustworthiness due to political decisions that undermined scientific integrity. “When the Trump administration began promoting false information about vaccines, it changed the long-standing relationship between our nations,” she explained.

Reimer affirmed the need for Canada to ensure it is sharing credible information independent of external influences. “I know that there are still really amazing people in the American system doing wonderful work, and so I think there’s a lot of ways that we can continue to work together,” she said, indicating her commitment to maintaining valuable international collaborations while prioritising Canadian health interests.
Her academic background, which includes a master’s degree in public health and research in sexually transmitted diseases and drug-related harms, provides her with a robust foundation for her new role. Nancy Hamzawi, president of the Public Health Agency of Canada, expressed confidence in Reimer’s ability to lead with science-driven strategies, 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, highlighting her commitment to fighting misinformation and advocating for equitable access to healthcare.
Why it Matters
Dr. Joss Reimer’s appointment comes at a pivotal moment for public health in Canada. As the country grapples with the dual challenges of misinformation and a resurgence of preventable diseases, her leadership and commitment to rebuilding trust in health institutions are crucial. By fostering collaboration and ensuring the dissemination of accurate information, there is hope for a healthier future for all Canadians. The stakes are high, and Reimer’s proactive approach could serve as a turning point in restoring faith in public health initiatives and safeguarding the health of communities across the nation.