A travel advisory has been issued in the United States for Manitoba, where a significant outbreak of hepatitis A has escalated, resulting in over 100 new cases reported in the past month. The advisory, classified as Level 1 by the U.S. Centers for Disease Control and Prevention, serves to inform travellers of the current health situation rather than discourage travel to the province.
Rising Case Numbers and Public Health Response
As of June 4, Manitoba reported a total of 784 hepatitis A cases linked to the outbreak that began in April 2025, marking a rise from 658 cases documented just a month earlier. This alarming trend has prompted health officials to take action, with Manitoba’s Chief Public Health Officer, Dr. Brent Roussin, stating, “That response is really just echoing the communications that we’ve been sharing with our partners and through jurisdictions in Canada. It’s just providing information that an outbreak exists here.”
The majority of reported infections, nearly 25 per cent, have occurred in the capital city of Winnipeg, where 186 cases have been identified. The outbreak has also led to 165 hospitalisations, including eight individuals who required intensive care, and tragically, four deaths have been recorded.
Communities at Risk
The outbreak’s roots can be traced back to several northern communities, where inadequate sanitation and poor access to clean water have exacerbated the situation. Dr. Roussin highlighted that overcrowded living conditions—particularly among vulnerable populations, such as those in precarious housing or shelters—have made certain demographics particularly susceptible to the virus. Additionally, individuals who inject drugs or engage in substance use are also at heightened risk.
Hepatitis A is a viral infection that primarily affects the liver, with symptoms including nausea, vomiting, dark urine, and jaundice. While the virus is not part of Manitoba’s routine vaccination programme, efforts are being made to expand vaccine eligibility to combat the outbreak effectively.
Vaccine Eligibility and Community Outreach
On May 28, the Tataskweyak Cree Nation, also known as Split Lake Cree First Nation, was added to the list of communities eligible for hepatitis A vaccinations. Earlier in May, Cross Lake First Nation, Ebb and Flow First Nation, and Bloodvein First Nation were included, while War Lake First Nation and Peguis First Nation were added in April and February, respectively.
In addition to residents of these communities, individuals travelling to or working in these areas, as well as those who have visitors from these locations, are also eligible for vaccination. Staff and volunteers of community-based organisations in Winnipeg that serve people experiencing homelessness can receive the vaccine as well. Dr. Roussin emphasised the importance of identifying where transmission is occurring and who is most at risk for future infection cycles.
Expert Insights on the Outbreak’s Trajectory
Despite the rising case numbers, infectious diseases specialist Dr. Isaac Bogoch expressed cautious optimism regarding the outbreak’s containment. He noted that the virus does not appear to be spreading broadly into the general population, suggesting that the outbreak is primarily confined to specific communities within Manitoba. “It appears this is among a community that is predominantly in shelters, in low-income and low-resource settings and settings that have poor infrastructure for sanitation and hygiene,” Dr. Bogoch said.
He added that while vaccination remains crucial, it is unlikely that the need for widespread immunisation will extend beyond the currently eligible communities. “If the population is largely restricted to Manitoba, then it’s probably going to stay in Manitoba,” he concluded.
Dr. Bogoch also pointed out that while fatalities are rare, adults infected with hepatitis A can experience severe illness, underscoring the importance of vaccination as a preventative measure. “It’s the kind of thing where some people say, ‘it’s not going to kill you but you’ll wish you were dead,'” he remarked, highlighting the virus’s potential severity.
Why it Matters
The hepatitis A outbreak in Manitoba underscores the critical importance of addressing public health issues through community-focused interventions and vaccinations. With a significant portion of affected individuals coming from marginalised backgrounds, this situation brings to light the ongoing challenges of health equity in Canada. Ensuring access to vaccinations and improving sanitation infrastructure are vital steps in preventing similar outbreaks in the future, not just in Manitoba but across the nation. As we navigate these public health challenges, a comprehensive approach that prioritises vulnerable communities will be essential for safeguarding the health of all Canadians.
