A significant travel advisory has been announced for Manitoba, Canada, as the province grapples with a worsening hepatitis A outbreak. In recent weeks, over 100 new cases have been reported, prompting the U.S. Centres for Disease Control and Prevention (CDC) to issue a Level 1 notice. This advisory, which came into effect on June 4, serves to inform rather than discourage travel, according to Dr. Brent Roussin, Manitoba’s chief provincial public health officer.
Current Situation in Manitoba
As of the latest reports, the hepatitis A outbreak has reached alarming levels, with the total number of cases rising to 784 since the initial identification of the outbreak in April 2025. This marks an increase from 658 cases documented just a month prior. Winnipeg has been particularly affected, with approximately 25% of infections occurring within the city, amounting to 186 cases.
Worryingly, the outbreak has resulted in 165 hospitalisations, including eight patients requiring intensive care, and sadly, four fatalities. Dr. Roussin noted that the outbreak began in northern communities where access to clean water and sanitation has been inadequate. However, it has since spread to various parts of the province, significantly impacting vulnerable populations.
Vulnerable Populations at Risk
The hepatitis A virus primarily poses a threat to those living in precarious housing conditions, including individuals in shelters, as well as those who inject drugs or partake in other substance use. Dr. Roussin highlighted the importance of targeting these groups in response efforts.
“As we assess where transmission is occurring, we are focusing on those who are most at risk for future cycles of transmission,” he stated. This targeted approach is crucial in managing the spread of hepatitis A, particularly in densely populated and under-resourced areas.
Vaccination Efforts Underway
Although hepatitis A vaccination is not part of Manitoba’s routine immunisation programme, the province is actively expanding eligibility for the vaccine. The vaccine can provide crucial protection both before and shortly after exposure to the virus.
Recent additions to the list of eligible communities include the Tataskweyak Cree Nation, which was added on May 28, along with Cross Lake First Nation, Ebb and Flow First Nation, and Bloodvein First Nation earlier in May. Additionally, War Lake First Nation was included in April, and Peguis First Nation received eligibility in February. This proactive measure aims to curb further transmission, particularly among those living in high-risk environments.
Experts Weigh In on the Outbreak
Infectious diseases specialist Dr. Isaac Bogoch has expressed cautious optimism regarding the outbreak’s potential trajectory. He indicated that while the situation remains serious, it is unlikely that the virus will spread significantly beyond the current affected communities. “The data suggests that the outbreak is largely contained within a specific demographic,” he explained.
Dr. Bogoch emphasised that while hepatitis A can be severe for adults, especially those with underlying health issues, it is generally less symptomatic in children and youth. Nonetheless, the need for vaccination remains critical to protect those at risk.
Why it Matters
The ongoing hepatitis A outbreak in Manitoba highlights the urgent need for enhanced public health measures, particularly in vulnerable communities. With the province’s healthcare system already under strain, the implications of this outbreak extend beyond immediate health concerns. It underscores the importance of addressing social determinants of health, such as access to clean water and adequate housing, which are crucial for preventing the spread of infectious diseases. As Manitoba navigates this public health challenge, the need for comprehensive strategies that prioritise the well-being of at-risk populations has never been more apparent.