Canadian infectious disease experts are sounding the alarm after recent political decisions in the United States.
They warn that changes affecting vaccine access, research, and global health partnerships could undermine public health not only in the U.S. but also in Canada and other countries that have long relied on American leadership.
Leadership Shake-Up at the CDC
The U.S. Department of Health and Human Services announced this week that Susan Monarez would no longer lead the Centers for Disease Control and Prevention (CDC).
The decision comes less than a month after she assumed the position, raising concerns about instability at one of the world’s most influential health agencies.
Wider Policy Shifts Raise Alarm
The removal follows earlier moves by U.S. President Donald Trump to withdraw from the World Health Organization and alter COVID-19 vaccine guidelines.
Critics argue these actions represent a broader effort to scale back vaccine access and weaken international cooperation, undermining progress in disease prevention and health security.
“Catastrophic” Consequences Predicted
Angela Rasmussen, a virologist at the University of Saskatchewan, called the developments “catastrophic.” She warned that U.S. health secretary Robert F. Kennedy Jr. has signaled clear intentions to restrict vaccine access, and said the ripple effects would inevitably extend beyond American borders, threatening Canada’s ability to protect its population.
Risks to Canadian Public Health
Mark Tyndall, former director of the BC Centre for Disease Control, expressed deep concern about potential consequences for Canada.
He cautioned that defunding research, dismantling surveillance systems, and introducing restrictive vaccination policies could mark a pivotal decline in North American health protections. “We’re entering very scary times,” he said.
Rise in Vaccine Skepticism
Both Rasmussen and Tyndall highlighted the growing influence of vaccine skepticism fueled by U.S. political rhetoric. They noted that Canada already experienced two major measles outbreaks in Ontario and Alberta last year. If hesitancy continues to rise, they fear future outbreaks could become more widespread and more difficult to contain.
Questioning CDC’s Reliability
Tyndall also noted that Canadian public health authorities have historically relied on the CDC for policy guidance and scientific expertise.
With the organization’s credibility now in question, he suggested Canada must prepare to make more independent decisions. “We have to make more of our own decisions,” he emphasized.
Canadian Political Response
BC Health Minister Josie Osborne issued a statement describing the Trump administration’s approach to public health and the CDC as “deeply disturbing.”
She stressed that protections on both sides of the border are interconnected and reiterated the province’s commitment to science, evidence-based research, and proactive efforts to counter health misinformation.
Need for Canadian Leadership
Both Rasmussen and Tyndall argued that Canada should now take on a stronger role in global health. Tyndall called for significant new investments, both domestically and internationally, to fill gaps left by the U.S. retreat from established leadership. “Canada needs to invest heavily,” he urged.
Unmoored from Global Collaboration
Rasmussen echoed the call, noting that the loss of long-standing partnerships with U.S. health agencies leaves Canada and other countries unmoored.
She warned that the world risks losing a system that for decades generated groundbreaking discoveries and guided global responses to infectious disease threats.
As political decisions reshape U.S. health policy, Canadian experts believe the stakes are high. Without strong cooperation, both countries may face greater risks from infectious diseases.
For Canada, the challenge is clear: step into a leadership role, bolster public health capacity, and protect its citizens from the ripple effects abroad.
