IMD can be fatal within 24 hours
of first symptoms.
Even when the disease is treated early, 5% to 10% of patients die, typically within 24-48 hours after symptoms start.
10% to 20% of survivors of meningococcal meningitis can suffer from long-term consequences, such as brain damage, hearing loss or learning disabilities.
After children aged 4 years and under, adolescents and young adults aged 15 to 24 years have the highest rates of reported IMD in Canada.
IMD has historically occurred in:
…routine childhood vaccination programs only cover IMD vaccinations for 4 of the 5 common serogroups:
There are 5 serogroups of the N. meningitidis bacteria most commonly associated with IMD: A, C, W135, Y and B.
Serogroup B is the most common cause of IMD in Canadian adolescents and young adults (2013–2017)
53 % of all reported IMD cases (among identified serogroups) in Canada between 2013 and 2017.
4 % of all reported IMD cases (among identified serogroups) in Canada in 2015.
30 % of all reported IMD cases (among identified serogroups) in Canada in 2011.