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Pneumococcal OPA GMTs and GMFRs With 2-Sided 95% CIs for Each Serotype. Assay results below the LLOQ were set to 0.5 × LLOQ in the analysis. cPCV7 = complementary 7-valent pneumococcal conjugate vaccine; GMFRs = geometric mean fold-rises from before vaccination to 1 month after vaccination; GMTs = geometric mean titers; LLOQ = lower limit of quantitation; OPA = opsonophagocytic activity; PCV13 = 13-valent pneumococcal conjugate vaccine; PCV20 = 20-valent pneumococcal conjugate vaccine
