NIMENRIX (Meningococcal polysaccharide groups A, C, W-135 and Y conjugate vaccine) 10 Clinical Pharmacology

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10.1 Mechanism of Action

Anti-capsular meningococcal antibodies protect against meningococcal diseases via complement mediated bactericidal killing. NIMENRIX induces the production of bactericidal antibodies against capsular polysaccharides of Neisseria meningitidis groups A, C, W-135 and Y when measured by assays using either rabbit complement (rSBA) or human complement (hSBA). By conjugating capsular polysaccharide to a protein carrier that contains T-cell epitopes, meningococcal conjugate vaccines like NIMENRIX change the nature of immune response to capsular polysaccharide from T-cell independent to T-cell dependent.

Canadian epidemiological data is available on the Public Health Agency of Canada website:  http://www.phac-aspc.gc.ca/im/vpd-mev/meningococcal-eng.php.