Persistence of the immune response at 5 years of age following infant immunisation with investigational quadrivalent MenACWY conjugate vaccine formulations.
BACKGROUND AND AIMS: Serogroup A, C, W-135 and Y meningococcal (MenACWY) conjugate vaccines are recommended for routine adolescent immunisation in the United States and Canada. We evaluated the persistence of bactericidal antibodies through early childhood, following infant immunisation with varying schedules of MenACWY-CRM(197) vaccine. METHODS: UK and Canadian infants were immunised with 2-3 doses of MenACWY-CRM(197) or 2 doses of serogroup C meningococcal (MenC) conjugate vaccine, and eit...Expand abstract
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