Indirect comparison of the immunogenicity of 15-valent and 20-valent pneumococcal conjugate vaccines in children using a 2+1 schedule.

BACKGROUND: Clinical trials have compared new pneumococcal conjugative vaccines (PCVs; PCV15 and PCV20) to an established PCV (PCV13) in a routine 2 + 1 schedule. This study performed an indirect comparison of PCV15 vs. PCV20 immune responses in heal…

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