Antigen-specific B-cell response to 13-valent pneumococcal conjugate vaccine in asplenic individuals with β-thalassemia previously immunized with 23-valent pneumococcal polysaccharide vaccine.

Papadatou, Ioanna; Piperi, Cristina; Alexandraki, Krystallenia; Kattamis, Antonis; Theodoridou, Maria; Spoulou, Vana · Clin Infect Dis · 2014

prospective_cohort · Level II

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Abstract

Current guidelines recommend a combined schedule of a 13-valent pneumococcal conjugate vaccine (PCV13) and PPSV23 (23-valent polysaccharide vaccine) for asplenic individuals. We show that PCV13 induces a T-dependent immune response in asplenic individuals with β-thalassemia, but previous PPSV23s affect the memory B-cell response in a dose- and time-dependent manner. Clinical Trials Registration. NCT01846923.

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