Study to Evaluate a 13-valent Pneumococcal Conjugate Vaccine in Infants.

Primary outcomes

1. Percentage of Participants Achieving Predefined Meningococcal C Serum Bactericidal Assay (SBA) Titer of ≥ 1:8, and a Predefined Antibody Level for Diphtheria in 13vPnC Group Relative to 7vPnC Group After 2-doses of the Infant Series

   Time frame: One month after 2-doses of the infant series (5 months of age)

   Percentage of participants achieving predefined antibody threshold levels; greater than or equal to (≥) 1:8 for meningococcal C SBA titer and ≥ 0.10 or >=0.01 International Units Per Milliliter (IU/mL) for diphtheria along with the corresponding 95% Confidence Interval (CI) are presented.

2. Geometric Mean Titer (GMT) of Meningococcal C in 13vPnC Group Relative to 7vPnC Group After 2-doses of the Infant Series

   Time frame: One month after 2-doses of the infant series (5 months of age)

3. Geometric Mean Antibody Concentration (GMC) for Diphtheria in 13vPnC Group Relative to 7vPnC Group After 2-doses of the Infant Series

   Time frame: One month after 2-doses of the infant series (5 months of age)

4. Percentage of Participants Reporting Pre-Specified Local Reactions

   Time frame: During the 4-day period after each dose

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

5. Percentage of Participants Reporting Pre-Specified Systemic Events

   Time frame: During the 4-day period after each dose

   Systemic events (fever [Fv] ≥ 37.5 degrees Celsius [C], fever ≥ 38 C but ≤ 39 C, fever >39 C but ≤ 40 C, fever > 40 C, decreased [Decr] appetite, irritability, increased [Incr] sleep, decreased sleep, hives, use of medication [Med] to treat symptoms [sx], and use of medication to prevent symptoms) were reported using an electronic diary. Participants may be represented in more than 1 category.

6. Geometric Mean Antibody Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody in 13vPnC Group After the Second Dose and After the Third Dose of a 3-Dose Infant Series and After the Toddler Dose

   Time frame: One month after infant series dose 2 (at 5 months of age) and dose 3 (at 7 months of age) and one month after the toddler dose (at 16 months of age)

   GMC as measured by enzyme-linked immunosorbent assay (ELISA) for 7 common pneumococcal serotypes which are present in both 7vPnC and 13vPnC (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.

7. Percentage of Participants Achieving Predefined Antibody Levels for Pertussis, Diphtheria, Tetanus, and Poliovirus in 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series and the Toddler Dose

   Time frame: One month after the 3-dose infant series (7 months of age) and the toddler dose (16 months of age)

   Percentage of participants achieving predefined antibody threshold levels with the corresponding 95% CI for each concomitant antigen (pertussis antigens including Pertussis Toxoid (PT), Filamentous Haemagglutinin (FHA), and Pertactin (PRN); diphtheria; tetanus; and poliovirus types 1, 2, and 3) are presented.

8. Geometric Mean Titers (GMT) for Poliovirus in 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series and the Toddler Dose

   Time frame: One month after the 3-dose infant series (7 months of age) and the toddler dose (16 months of age)

9. Geometric Mean Antibody Concentrations (GMC) for Diphtheria and Tetanus in 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series and the Toddler Dose

   Time frame: One month after the 3-dose infant series (7 months of age) and the toddler dose (16 months of age)

10. Geometric Mean Antibody Concentrations (GMC) for Pertussis in 13vPnC Group Relative to 7vPnC Group After the 3-dose Infant Series and the Toddler Dose

    Time frame: One month after the 3-dose infant series (7 months of age) and the toddler dose (16 months of age)

    GMCs with the corresponding 95% CI for each concomitant antigen pertussis antigens (PT, FHA, PRN, and FIM) as measured by EU/mL are presented.

11. Percentage of Participants Achieving Antibody Level ≥ 0.35 Microgram Per Milliliter (μg/mL) in 13vPnC Group After the Second Dose and After the Third Dose of a 3-Dose Infant Series and After the Toddler Dose

    Time frame: One month after infant series dose 2 (at 5 months of age) and dose 3 (at 7 months of age) and one month after the toddler dose (at 16 months of age)

    Percentages of participants achieving World Health Organization (WHO) predefined antibody threshold ≥ 0.35μg/mL along with the corresponding 95% CI for the 7 common pneumococcal serotypes, present in both 13vPnC and 7vPnC (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.