A Phase 4, Open-label Trial Describing The Safety, Tolerability, And Immunogenicity Of The 13 Valent Pneumococcal Conjugate Vaccine In Preterm Compared To Term Infants

Percentage of Participants Achieving Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody Level Greater Than or Equal to (>=) 0.35 Microgram Per Milliliter (mcg/mL) 1 Month After Infant Series

Time Frame: 1 month after the infant series

Percentage of participants achieving predefined antibody threshold \>=0.35 mcg/mL along with the corresponding 95 percent (%) confidence interval (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) were presented. Exact 2-sided CI based on the observed proportion of participants. Here 'n' signifies participants with a determinate IgG concentration to the given serotype for each arm, respectively.

Percentage of Participants With Adverse Events (AEs) or Serious Adverse Events (SAEs): 2-Year Follow-up After Toddler Dose

Time Frame: 1-year follow-up after toddler dose to 2-year follow-up after toddler dose

An AE was any untoward medical occurrence in a participant who received vaccine without regard to possibility of causal relationship. SAE: an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial/prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Geometric Mean Concentration (GMC) for Serotype-specific Pneumococcal Immunoglobulin G (IgG) Antibody 1 Month After the Infant Series

Time Frame: 1 month after the infant series

Antibody geometric mean concentration (GMC) 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) were presented. GMC (13vPnC) and corresponding 2-sided 95% CIs were evaluated. GMCs were calculated using all participants with available data for the specified blood draw. CIs for GMC were back transformations of a CI based on the Student t distribution for the mean logarithm of the concentrations.

Percentage of Participants Reporting Pre-Specified Systemic Events Within 7 Days After Toddler Dose

Time Frame: Within 7 days after the toddler dose

Systemic events (fever \>=38 degrees Celsius \[C\], decreased appetite, increased sleep, and irritability or decreased sleep) and use of antipyretic medication were reported using an electronic diary. Decreased appetite was scaled as Any; Mild (loss of appetite but no decreased oral intake); Moderate (decreased oral intake); Severe (refusal to feed). Increased sleep was scaled as Any; Mild (increased or prolonged sleeping bouts); Moderate (slightly subdued interfering with daily activity); Severe (disabling not interested in usual daily activity). Irritability or decreased sleep was scaled as Any; Mild (easily consolable); Moderate (requiring increased attention); Severe (inconsolable; crying that cannot be comforted). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Local Reactions Within 7 Days After Dose 3 Infant Series

Time Frame: Within 7 days after Dose 3 of the infant series

Local reactions were reported using an electronic diary. Tenderness was scaled as Any (tenderness present); Mild (hurts if gently touched with no crying); Moderate (hurts if gently touched with crying); Severe (causes limitation of limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters \[cm\] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (\>7.0 cm). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Systemic Events Within 7 Days After Dose 2 Infant Series

Time Frame: Within 7 days after Dose 2 of the infant series

Systemic events (fever \>=38 degrees Celsius \[C\], decreased appetite, increased sleep, and irritability or decreased sleep) and use of antipyretic medication were reported using an electronic diary. Decreased appetite was scaled as Any; Mild (loss of appetite but no decreased oral intake); Moderate (decreased oral intake); Severe (refusal to feed). Increased sleep was scaled as Any; Mild (increased or prolonged sleeping bouts); Moderate (slightly subdued interfering with daily activity); Severe (disabling not interested in usual daily activity). Irritability or decreased sleep was scaled as Any; Mild (easily consolable); Moderate (requiring increased attention); Severe (inconsolable; crying that cannot be comforted). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Local Reactions Within 7 Days After Dose 2 Infant Series

Time Frame: Within 7 days after Dose 2 of the infant series

Local reactions were reported using an electronic diary. Tenderness was scaled as Any (tenderness present); Mild (hurts if gently touched with no crying); Moderate (hurts if gently touched with crying); Severe (causes limitation of limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters \[cm\] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (\>7.0 cm). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Local Reactions Within 7 Days After Toddler Dose

Time Frame: Within 7 days after the toddler dose

Local reactions were reported using an electronic diary. Tenderness was scaled as Any (tenderness present); Mild (hurts if gently touched with no crying); Moderate (hurts if gently touched with crying); Severe (causes limitation of limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters \[cm\] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (\>7.0 cm). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Systemic Events Within 7 Days After Dose 1 Infant Series

Time Frame: Within 7 days after Dose 1 of the infant series

Systemic events (fever \>=38 degrees Celsius \[C\], decreased appetite, increased sleep, and irritability or decreased sleep) and use of antipyretic medication were reported using an electronic diary. Decreased appetite was scaled as Any; Mild (loss of appetite but no decreased oral intake); Moderate (decreased oral intake); Severe (refusal to feed). Increased sleep was scaled as Any; Mild (increased or prolonged sleeping bouts); Moderate (slightly subdued interfering with daily activity); Severe (disabling not interested in usual daily activity). Irritability or decreased sleep was scaled as Any; Mild (easily consolable); Moderate (requiring increased attention); Severe (inconsolable; crying that cannot be comforted). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Local Reactions Within 7 Days After Dose 1 Infant Series

Time Frame: Within 7 days after Dose 1 of the infant series

Local reactions were reported using an electronic diary. Tenderness was scaled as Any (tenderness present); Mild (hurts if gently touched with no crying); Moderate (hurts if gently touched with crying); Severe (causes limitation of limb movement). Redness and swelling were scaled as Any (redness or swelling present); Mild (0.5 centimeters \[cm\] to 2.0 cm); Moderate (2.5 to 7.0 cm); Severe (\>7.0 cm). Participants may be represented in more than 1 category.

Percentage of Participants Reporting Pre-Specified Systemic Events Within 7 Days After Dose 3 Infant Series

Time Frame: Within 7 days after Dose 3 of the infant series

Systemic events (fever \>=38 degrees Celsius \[C\], decreased appetite, increased sleep, and irritability or decreased sleep) and use of antipyretic medication were reported using an electronic diary. Decreased appetite was scaled as Any; Mild (loss of appetite but no decreased oral intake); Moderate (decreased oral intake); Severe (refusal to feed). Increased sleep was scaled as Any; Mild (increased or prolonged sleeping bouts); Moderate (slightly subdued interfering with daily activity); Severe (disabling not interested in usual daily activity). Irritability or decreased sleep was scaled as Any; Mild (easily consolable); Moderate (requiring increased attention); Severe (inconsolable; crying that cannot be comforted). Participants may be represented in more than 1 category.

Percentage of Participants With Adverse Events (AEs) or Serious Adverse Events (SAEs): After Infant Series

Time Frame: 1 Month after Dose 3 of the infant series up to toddler dose

An AE was any untoward medical occurrence in a participant who received vaccine without regard to possibility of causal relationship. SAE: an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial/prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Percentage of Participants With Adverse Events (AEs) or Serious Adverse Events (SAEs): Infant Series

Time Frame: Dose 1 up to 1 month after Dose 3 (infant series)

An AE was any untoward medical occurrence in a participant who received vaccine without regard to possibility of causal relationship. SAE: an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial/prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Percentage of Participants With Adverse Events (AEs) or Serious Adverse Events (SAEs): 1-Year Follow-up After Toddler Dose

Time Frame: 1 month after toddler dose up to 1-year follow-up

An AE was any untoward medical occurrence in a participant who received vaccine without regard to possibility of causal relationship. SAE: an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial/prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Percentage of Participants With Adverse Events (AEs) or Serious Adverse Events (SAEs): Toddler Dose

Time Frame: Toddler dose up to 1 Month after toddler dose

An AE was any untoward medical occurrence in a participant who received vaccine without regard to possibility of causal relationship. SAE: an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial/prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.