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Safety and Immunogenicity of 20-Valent PCV According to Number and Timing of Primary Series Doses

2026-01-02 infectious diseases Title + abstract only
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BackgroundThe number and timing of pneumococcal conjugate vaccine (PCV) primary doses can impact infant immune responses. This descriptive post hoc analysis evaluates the immunogenicity of the 20-valent PCV (PCV20) by vaccination timing in healthy infants in 2 key phase 3 trials. MethodsImmunogenicity endpoints from study B7471012 comparing PCV20 to 13-valent PCV (PCV13) in a 2+1 schedule were examined by timing of vaccination subgroup; the 2,4m subgroup (participants vaccinated at 2, 4, and 11...

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