Cases of meningococcal disease in Canada have reached their highest level in more than a decade, according to new public health data.
The rare but serious infection can cause meningitis, bloodstream infections and sepsis, and can lead to organ damage, long-term disability or death.
Infants and young adults face some of the greatest risks.
Data from the Public Health Agency of Canada shows a steady increase in cases since the pandemic began.
In 2021 there were 48 cases, rising to almost 100 in 2023.
Preliminary figures from CBC News indicate at least 132 cases in 2024 and 155 in 2025, the highest number since 2012.
“So that’s a very significant consequence and a very serious disease at such a young age,” says Dr. Cristin Muecke of Nova Scotia Health.
“And so from that perspective, even though it’s rare, the consequences are quite significant.”
The infection, caused by the Neisseria meningitidis bacteria, has a mortality rate of about 14 percent in Canada.
Survivors may face lasting complications, including hearing loss, neurological damage and limb amputations.
