The purpose of this study is to evaluate the safety, tolerability, and immunogenicity of V114 in healthy infants.

The primary hypotheses are that: 1) V114 is non-inferior to Prevnar 13™ for the 13 shared serotypes between V114 and Prevnar 13™ based on response rates at 30 days following Dose 3; 2) V114 is non-inferior to Prevnar 13™ for the 2 unique V114 serotypes based on the response rate of the 2 unique V114 serotypes compared with the lowest response rate of any of the shared serotypes in Prevnar 13™, excluding serotype 3, at 30 days following Dose 3; 3) V114 is non-inferior to Prevnar 13™ for the 13 shared serotypes based on anti-pneumococcal polysaccharide (PnPs) serotype-specific immunoglobulin g (IgG) geometric mean concentrations (GMCs) at 30 days following Dose 3; 4) V114 is non-inferior to Prevnar 13™ for the 2 unique V114 serotypes based on the anti-PnPs serotype-specific IgG GMCs of the 2 unique V114 serotypes compared with the lowest IgG GMC of any of the shared serotypes in Prevnar 13™, excluding serotype 3, at 30 days following Dose 3; 5) V114 is non-inferior to Prevnar 13™ for the 13 shared serotypes between V114 and Prevnar 13™ based on anti-PnPs serotype-specific IgG GMCs at 30 days following Dose 4; and 6) V114 is non-inferior to Prevnar 13™ for the 2 unique V114 serotypes based on anti-PnPs serotype-specific IgG GMCs of the 2 unique V114 serotypes compared with the lowest IgG GMC of any of the shared serotypes in Prevnar 13, excluding serotype 3, at 30 days following Dose 4.