Impact of U.S. Health Policy Changes on Vaccine Trust in Canada

The recent actions of U.S. Health Secretary Robert F. Kennedy Jr. have sparked significant concern regarding vaccine trust in Canada. In December 2025, a panel appointed by Kennedy voted to remove the longstanding recommendation from the U.S. Centers for Disease Control and Prevention (CDC) that all newborns receive the hepatitis B vaccine. Additionally, the CDC updated its website to state that “studies have not ruled out the possibility that infant vaccines cause autism,” a claim that has been widely criticized by public health experts as misleading. These developments have led Canadian Health Minister Marjorie Michel to express her lack of confidence in U.S. health institutions, stating, “I cannot trust them as a reliable partner, no.”

The Guardian

The erosion of trust in U.S. health guidelines comes at a critical time for Canada, which recently lost its measles elimination status after reporting over 5,000 cases in 2025. The situation has been exacerbated by Meta's ban on news sharing in Canada, which has hindered the dissemination of reliable public health information. According to a 2021 national survey, 2.1% of Canadian two-year-olds had not received any vaccinations, an increase from 1.7% in 2019. Parents cited safety concerns and doubts about vaccine efficacy as reasons for refusal, with 17% of those expressing vaccine hesitancy indicating they sourced their information from U.S. government websites.

The Guardian

While U.S. policy changes have raised alarms, some experts argue that Canada must also address its internal issues contributing to vaccine distrust. Michel Grignon, a health economist at McMaster University, contends that the Canadian government should focus on homegrown causes of vaccine hesitancy rather than attributing it primarily to U.S. influences. He points to the erosion of social safety nets and the impact of the COVID-19 pandemic as factors that have disrupted social cohesion and increased distrust in government. Grignon highlighted the 2022 trucker protests against COVID-19 restrictions as a manifestation of this growing mistrust, stating, “We are the source of our own problem, and our vaccine hesitancy has not much to do with the US. It has to do with us.”

The Guardian

In light of these challenges, experts like Kumanan Wilson, a doctor and professor at the University of Ottawa, suggest that Canada should enhance its collaboration with global public health systems. By developing robust health surveillance mechanisms, Canada could not only address its own vaccine concerns but also contribute valuable information to the international community.

The Guardian

• “I cannot trust them as a reliable partner, no.” — Marjorie Michel, Canadian Health Minister

The Guardian

• “We are the source of our own problem, and our vaccine hesitancy has not much to do with the US. It has to do with us,” — Michel Grignon, Professor and Health Economist at McMaster University

The Guardian

There is a discrepancy regarding the impact of U.S. health policy on Canadian vaccine hesitancy. While some experts attribute the issue primarily to U.S. misinformation, others emphasize that domestic factors play a more significant role. Additionally, there is a lack of recent data on vaccine hesitancy trends in Canada, making it difficult to assess the current situation comprehensively.

The Guardian