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Meningococcal serogroup C bactericidal titer versus serogroup-specific IgG concentrations (ELISA) for adult subjects immunized with one dose of MnCC (n = 15) or a licensed quadrivalent polysaccharide (A, C, Y, W-135) vaccine (n = 15). Sera were collected for analysis prior to immunization (○) or approximately 1 month postimmunization with the licensed quadrivalent polysaccharide vaccine (■ [A]) or the conjugate vaccine (● [B]).
