Invasive meningococcal disease, reported in Canada due to rising cases in 2025–26, is caused by which bacterium?

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The correct answer is Option C: Neisseria meningitidis. Canada reported a rise in invasive meningococcal disease in 2025–26, with 155 cases in 2025, the highest since 2012. Invasive meningococcal disease in Canada is caused by the bacterium Neisseria meningitidis, leading to meningitis and bloodstream infection. Prince Edward Island and Nova Scotia expanded Meningitis B vaccination programmes for students and young adults. Prince Edward Island started urging Grade 12 students for free Meningitis B vaccination on 29 May 2026. Nova Scotia has offered free Meningitis B vaccine since 2023 for post-secondary students (≤25 years) and military recruits in shared housing. Nova Scotia and Prince Edward Island are the only Canadian provinces providing free Meningitis B vaccination for post-secondary students. Manitoba recorded 12 cases (2023), 25 cases (2024), 24 cases (2025) with early 2026 cases also reported, linked mainly to the W strain. Meningitis B accounts for about one-third to two-thirds of invasive meningococcal disease cases in Canada, depending on the region.

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Salmonella typhi

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Escherichia coli

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Vibrio cholerae

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Mycobacterium leprae

Invasive meningococcal disease, reported in Canada due to rising cases in 2025–26, is caused by which bacterium?

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Invasive meningococcal disease, reported in Canada due to rising cases in 2025–26, is caused by which bacterium?

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