A Phase 3, Randomized, Active-Controlled, Double-blind Trial Evaluating the Safety, Tolerability and Immunologic Noninferiority of a 13-valent Pneumococcal Conjugate Vaccine Compared to a 7-valent Pneumococcal Conjugate Vaccine in Healthy Infants Given With Routine Pediatric Vaccinations in the United States

Percentage of Participants Reporting Pre-specified Systemic Events

Time Frame: Within 7 days after each dose

Systemic events (any fever \[Fv\] ≥ 38 degrees Celsius \[C\], decreased (decr.) appetite, irritability, increased (incr.) sleep, decreased sleep, and hives \[urticaria\], use of antipyretic medication \[med\] to treat or prevent symptoms \[sx\]) were reported using an electronic diary. Participants may be represented in more than 1 category.

Percentage of Participants Achieving Antibody Level ≥0.35 μg/mL in 13vPnC Group Relative to 7vPnC Group After the 3-Dose Infant Series

Time Frame: One month after the 3-dose infant series (7 months of age)

Percentages of Participants achieving World Health Organization (WHO) predefined antibody threshold ≥0.35 μg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (serotypes 1, 3, 5, 6A, 7F, and 19A) are presented.

Percentage of Participants Achieving Predefined Antibody Levels for Haemophilus Influenzae Type b, Diphtheria Toxoid, and Pertussis Antigens in 13vPnC Group Relative to 7vPnC Group After the Infant Series

Time Frame: One Month After the Infant Series (7 months of age)

Predefined Antibody Levels for Haemophilus Influenzae Type b (\[Hib\] 0.15 µg/mL or 1.0 µg/mL), Diphtheria Toxoid (0.1 International Units \[IU\]/mL), and Pertussis antigens (Pertussis filamentous hemagglutinin \[FHA\] 40.5 Elisa Units \[EU\]/mL, Pertussis toxoid \[PT\] 16.5 EU/mL, Pertussis pertactin \[PRN\] 26 EU/mL).

Percentage of Participants Reporting Pre-specified Local Reactions

Time Frame: Within 7 days after each dose

Local reactions were reported using an electronic diary. Tenderness was scaled as Any (tenderness present); Significant (\[Sig.\], present and interfered with limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters \[cm\] to 2.0 cm); Moderate (\[Mod.\], 2.5 to 7.0 cm); Severe (\[Sev.\], \> 7.0 cm). Participants may have been represented in more than 1 category.

Geometric Mean Antibody Concentration in 13vPnC Group Relative to 7vPnC Group 1 Month After the Toddler Dose

Time Frame: 1 Month After the Toddler Dose

Antibody concentration/geometric mean concentration as measured by enzyme-linked immunosorbent assay (ELISA) for 7 common pneumococcal serotypes (serotypes 4, 6B, 9V, 14, 18C, 19F, and 23F) and 6 additional pneumococcal serotypes specific to 13vPnC (Serotypes 1, 3, 5, 6A, 7F, and 19A) are presented.