Antibody persistence up to 5 y after vaccination with a quadrivalent meningococcal ACWY-tetanus toxoid conjugate vaccine in adolescents.

Hum Vaccin Immunother · 2017 · PMC5360140 · PMID 28152332

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an increasing trendno p-value reported

For each meningococcal serogroup, an increasing trend was observed in the percentage of subjects with rSBA titers ≥1:8 from the MenACWY-TT group, at each time point, starting from year 2.

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