Local reactions (redness, swelling, and injection site pain) at the site of investigational product administration were recorded in electronic diary (e-diary). Redness and swelling were measured and recorded in caliper units where 1 caliper unit = 0.5 centimeter (cm). Redness and swelling were graded as mild (more than \[\>\]2.0 to 5.0 cm), moderate (\>5.0 to 10.0cm) and severe (\>10.0cm). Pain at injection site was graded as mild (did not interfere with activity), moderate (interfered with activity), and severe (prevented daily activity). Exact 2-sided 95% confidence interval was based on the Clopper and Pearson method.

Systemic events included: fever, fatigue, headache, joint pain and muscle pain. Fever was defined as an oral temperature of more than or equal to (\>=)38.0 degree Celsius (C) and was classified as \>=38.0 degree C, \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0 degree C. Fatigue, headache, joint pain and muscle pain were graded as mild (did not interfere with activity), moderate (some interference with activity) and severe (prevented daily activity). Exact 2-sided 95% confidence interval was based on the Clopper and Pearson method.

An AE was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure. Exact 2-sided 95% confidence interval was based on the Clopper and Pearson method.

An SAE was any untoward medical occurrence at any dose that: resulted in death, was life threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, resulted in congenital anomaly/birth defect or was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic or that was considered to be an important medical event.

Prompted local reactions after each dose

Prompted systemic reactions after each dose

Adverse events occurring from Dose 1 to 1 month after Dose 3 in each group

Adverse events occurring from Dose 4 to 1 month after Dose 4 in each group

SAEs occurring up to 1 month after Dose 4 in each group

IgG GMCs for the 20vPnC serotypes 1 month after Dose 4, Indian participants only

Local reactions included redness, swelling, and pain at the injection site, recorded by parents/legal guardians of participants in an electronic diary (e-diary). Redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit = 0.5 centimeter (cm). Redness and swelling were graded as mild (greater than \[\>\] 0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95 percent (%) confidence interval (CI) was based on Clopper and Pearson method.

Systemic events included fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participants using an e-diary. Fever: temperature \>=38.0 degree Celsius (C) and categorized as \>=38.0 to 38.4 degree C,\>38.4 to 38.9 degree C,\>38.9 to 40.0 degree C and \>40.0 degree C. Decreased appetite was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability was graded as mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper \& Pearson method.

An AE was any untoward medical occurrence in a participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. 95% CI was based on the Clopper and Pearson method. AEs reported in this endpoint excluded local reactions and systemic events collected from an e-diary.

A SAE was any untoward medical occurrence that: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/ incapacity; was a congenital anomaly/birth defect; was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic, was considered serious and other important medical events. 95% CI was based on the Clopper and Pearson method.

Pneumococcal serotype-specific IgG concentrations were measured for serum samples for 7 additional serotypes: 8, 10A, 11A, 12F, 15B, 22F, 33F. The predefined level was 0.35 microgram per milliliter (mcg/mL) for all 7 additional serotypes. 95% CI was based on the Clopper and Pearson method.

Local reactions included pain at injection site, redness and swelling and were recorded by participants in an electronic diary (e-diary). Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 centimeter (cm) and graded as mild: greater than (\>) 2.0 to 5.0 cm, moderate: \>5.0 to 10.0 cm and severe: \>10.0 cm. Pain at injection site was graded as mild: did not interfere with daily activity, moderate: interfered with daily activity and severe: prevented daily activity. Percentage of participants with local reactions at each injection site within 10 days after vaccination and the associated 2-sided 95% confidence interval (CI) based on the Clopper and Pearson method was presented.

An AE was defined as any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. Percentage of participants with AEs and the associated 2-sided 95% CI based on the Clopper and Pearson method was presented. Only AEs collected by non-systematic assessment (i.e. excluding local reactions and systemic events) were reported in this outcome measure.

A SAE was defined as any untoward medical occurrence that, at any dose, resulted in death; was life-threatening (immediate risk of death); required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); resulted in congenital anomaly/birth defect; was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic or that was considered to be an important medical event. Percentage of participants with SAEs and the associated 2-sided 95% CI based on the Clopper and Pearson method was presented.

Local reactions included pain at injection site, redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit =0.5 centimeter (cm). Pain at injection site was graded as mild: hurts if gently touched; moderate: hurts if gently touched with crying; severe: limited limb movement. Redness and swelling were graded as mild: \>0 to 2.0 cm; moderate \>2.0 to 7.0 cm; and severe: \>7.0 cm.

Local reactions included pain at injection site, redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit =0.5 cm. Pain at injection site was graded as mild: hurts if gently touched; moderate: hurts if gently touched with crying; severe: limited limb movement. Redness and swelling were graded as mild: \>0 to 2.0 cm; moderate \>2.0 to 7.0 cm; and severe: \>7.0 cm.

Local reactions included pain at injection site, redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit =0.5 cm. Pain at injection site was graded as mild: hurts if gently touched; moderate: hurts if gently touched with crying; severe: limited limb movement. Redness and swelling were graded as mild: \>0 to 2.0 cm; moderate \>2.0 to 7.0 cm; and severe: \>7.0 cm.

Local reactions included pain at injection site, redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit =0.5 cm. Pain at injection site was graded as mild: hurts if gently touched; moderate: hurts if gently touched with crying; severe: limited limb movement. Redness and swelling were graded as mild: \>0 to 2.0 cm; moderate \>2.0 to 7.0 cm; and severe: \>7.0 cm.

Systemic events included fever, decreased appetite, drowsiness and irritability. Fever was defined as an axillary temperature greater than or equal to (\>=) 37.5 degree Celsius (C), and categorized as \>=37.5 to 38.4 degree C, greater than (\>)38.4 to 38.9 degree C,\>38.9 to 40.0 degree C and \>40.0 degree C; decreased appetite was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed); drowsiness was graded as mild (increased or prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity); Irritability: graded as mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted).

Systemic events included fever, decreased appetite, drowsiness and irritability. Fever was defined as an axillary temperature \>=37.5 degree C and categorized as \>=37.5 to 38.4 degree C,\>38.4 to 38.9 degree C,\>38.9 to 40.0 degree C and \>40.0 degree C; decreased appetite was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed); drowsiness was graded as mild (increased or prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity); Irritability: graded as mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted).

Systemic events included fever, decreased appetite, drowsiness and irritability. Fever was defined as an axillary temperature \>=37.5 degree C and categorized as \>=37.5 to 38.4 degree C,\>38.4 to 38.9 degree C,\>38.9 to 40.0 degree C and \>40.0 degree C; decreased appetite was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed); drowsiness was graded as mild (increased or prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity); Irritability: graded as mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted).

Systemic events included fever, decreased appetite, drowsiness and irritability. Fever was defined as an axillary temperature \>=37.5 degree C and categorized as \>=37.5 to 38.4 degree C,\>38.4 to 38.9 degree C,\>38.9 to 40.0 degree C and \>40.0 degree C; decreased appetite was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed); drowsiness was graded as mild (increased or prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity); Irritability: graded as mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted).

An adverse event (AE) was any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment.

An AE was any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment.

A serious AE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/ incapacity; congenital anomaly/birth defect and other important medical events.

An NDCMC was defined as a significant disease or medical condition, not previously identified, that is expected to be persistent or was otherwise long-lasting in its effects.

Pneumococcal serotype-specific IgG Concentrations were measured for 20vPnC serotypes: 1, 3, 4, 5, 6A, 6B, 7F, 8, 9V, 10A, 11A, 12F, 14, 15B, 18C, 19A, 19F, 22F, 23F, and 33F. Assay results below the lower limit of quantitation (LLOQ) were set to 0.5\*LLOQ. The predefined levels, \>=0.35 micrograms/mL for all serotypes except for serotypes 5 (\>=0.23 micrograms/mL), 6B (\>=0.10 micrograms/mL) and 19A (\>=0.12 micrograms/mL).

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an electronic diary (e-diary). Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 centimeter (cm). Redness and swelling were graded as mild (greater than \[\>\] 0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95 percent (%) confidence interval (CI) was based on Clopper and Pearson method.

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an e-diary. Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as mild (\>0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95% CI was based on Clopper and Pearson method.

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an e-diary. Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as mild (\>0 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95% CI was based on Clopper and Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participants using an e-diary. Fever: was defined as temperature \>=38.0 degree Celsius (C) and categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper and Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participant's using an e-diary. Fever: was defined as temperature \>=38.0 degree C and categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper and Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participants using an e-diary. Fever: was defined as temperature \>=38.0 degree C and categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake) \& severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper and Pearson method.

An AE was any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. 95% CI was based on the Clopper and Pearson method. AEs reported in this outcome measure excluded local reactions and systemic events collected from an e-diary.

An AE was any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. 95% CI was based on the Clopper and Pearson method. AEs reported in this outcome measure excluded local reactions and systemic events collected from an e-diary.

A SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/ incapacity; was a congenital anomaly/birth defect and other important medical events. 95% CI was based on the Clopper and Pearson method.

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or was otherwise long-lasting in its effects. 95% CI was based on the Clopper and Pearson method.

Predefined IgG concentrations were as follows: for serotype 1, 3, 4, 6A, 7F, 9V, 14, 18C, 19F, 23F, 8, 10A, 11A, 12F, 15B, 22F, 33F: \>=0.35 microgram per mL (mcg/mL), for serotype 5: \>=0.23 mcg/mL, for serotype 6B: \>=0.10 mcg/mL and for serotype 19A: \>=0.12 mcg/mL. 95% CI was based on the Clopper and Pearson method.

Pneumococcal serotype-specific IgG concentration was measured for serum sample for 13vPnC serotype: 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F, 7 additional serotype: 8, 10A, 11A, 12F, 15B, 22F, 33F. GMC and corresponding 2-sided 95% CIs were calculated by exponentiating mean logarithm of concentration, corresponding 2-sided 95% CIs (based on Student's t distribution). Assay result below LLOQ was set to 0.5\*LLOQ. Geometric mean ratios (GMRs) were reported in statistical analysis section and were calculated by exponentiating mean difference of logarithm of concentration and corresponding 2-sided 95% CIs (based on Student's t distribution).

Pneumococcal serotype-specific IgG concentrations were measured for serum samples for 13vPnC serotypes: 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F, 7 additional serotype: 8, 10A, 11A, 12F, 15B, 22F,33F. GMC and corresponding 2-sided 95% CI were calculated by exponentiating mean logarithm of concentrations and corresponding 2-sided 95% CI (based on Student's t distribution). Assay result below LLOQ were set to 0.5\*LLOQ. GMRs were reported in statistical analysis section and were calculated by exponentiating mean difference of logarithm of concentration and corresponding 2-sided 95% CI (based on Student's t distribution).

Diphtheria and tetanus toxoids: concentration of antibody (AB) (in international units \[IU\]) to diphtheria \& tetanus toxoid (prespecified level\>=0.1 IU/mL); Pertussis antigens-pertussis toxin (PT), filamentous hemagglutinin (FHA), pertactin (PRN): prespecified level \>=observed Anti pertussis Antibody concentration achieved by 95% of 13vPnC recipient; HBsAg prespecified level \>=10 milli-IU per mL (mIU/mL); Poliovirus strains (types 1, 2 and 3): prespecified level: \>=1:8; Hemophilus influenzae type b(Hib): prespecified level \>=0.15 microgram per millilitre (mcg/mL) polyribosylribitol phosphate (anti-PRP) in mcg/mL. Concomitant vaccine response was assessed from subset of randomly selected study participants.

Pre-specified vaccine antigen (measles) was administered concomitantly with 20vPnC or 13vPnC at Dose 3 and responses were measured 1 month after Dose 3. Assay results below the LLOQ were set to 0.5\*LLOQ in the analysis. GMCs and 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student's t distribution). The immune responses were only measured on random subset of participants.

Pre-specified vaccine antigen (mumps) was administered concomitantly with 20vPnC or 13vPnC at Dose 3 and responses were measured 1 month after Dose 3. Assay results below the LLOQ were set to 0.5\*LLOQ in the analysis. GMCs and 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student's t distribution). The immune responses were only measured on random subset of participants.

Pre-specified vaccine antigen (rubella) was administered concomitantly with 20vPnC or 13vPnC at Dose 3 and responses were measured 1 month after Dose 3. Assay results below LLOQ were set to 0.5\*LLOQ in the analysis. GMCs and 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student's t distribution). The immune responses were only measured on random subset of participants.

Pre-specified vaccine antigen (varicella) was administered concomitantly with 20vPnC or 13vPnC at Dose 3 and responses were measured 1 month after Dose 3. Assay results below the LLOQ were set to 0.5\*LLOQ in the analysis. GMCs and 2-sided 95% CIs were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs (based on the Student's t distribution). The immune responses were only measured on random subset of participants.

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an e-diary. Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as mild (\>0 to 2.0 cm), moderate (\> 2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95% CI was based on Clopper and Pearson method.

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an e-diary. Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as mild (\>0 to 2.0 cm), moderate (\> 2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95% CI was based on Clopper and Pearson method.

Local reactions included redness, swelling and, pain at the injection site, recorded by parents/legal guardians of participants in an e-diary. Redness and swelling were measured and recorded in measuring device units. 1 measuring device unit =0.5 cm. Redness and swelling were graded as mild (\>0 to 2.0 cm), moderate (\> 2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement). 95% CI was based on Clopper and Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participant's using e-diary. Fever: temperature \>=38.0 degree C \& categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: was graded as mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper \& Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participants using an e-diary. Fever: temperature \>=38.0 degree C and categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper \& Pearson method.

Systemic events: fever, decreased appetite, drowsiness/increased sleep and irritability, recorded by parents/legal guardians of participants using an e-diary. Fever: temperature \>=38.0 degree C and categorized as \>=38.0 to 38.4 degree C, \>38.4 to 38.9 degree C, \>38.9 to 40.0 degree C and \>40.0-degree C. Decreased appetite: mild (decreased interest in eating), moderate (decreased oral intake) and severe (refusal to feed). Drowsiness was graded as mild (increased/prolonged sleeping bouts), moderate (slightly subdued, interfered with daily activity) and severe (disabling, not interested in usual daily activity). Irritability: mild (easily consolable), moderate (required increased attention) and severe (inconsolable, crying could not be comforted). 95% CI was based on Clopper \& Pearson method.

An AE was any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. 95% CI was based on the Clopper and Pearson method. AEs reported in this outcome measure excluded local reactions and systemic events collected from an e-diary.

An AE was any untoward medical occurrence in a participants, temporally associated with the use of study treatment, whether or not considered related to the study treatment. 95% CI was based on the Clopper and Pearson method. AEs reported in this outcome measure excluded local reactions and systemic events collected from an e-diary.

A SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/ incapacity; was a congenital anomaly/birth defect and other important medical events. 95% CI was based on the Clopper and Pearson method.

A NDCMC was defined as a disease or medical condition, not previously identified, that was expected to be persistent or was otherwise long-lasting in its effects. 95% CI was based on the Clopper and Pearson method.

Predefined IgG concentrations were as follows: for serotype 1, 3, 4, 6A, 7F, 9V, 14, 18C, 19F, 23F, 8, 10A, 11A, 12F, 15B, 22F, 33F: \>=0.35 mcg/mL, for serotype 5: \>=0.23 mcg/mL, for serotype 6B. \>=0.10 mcg/mL and for serotype 19A: \>=0.12 mcg/mL. 95% CI was based on the Clopper and Pearson method.

Pneumococcal serotype-specific IgG concentrations were measured for serum samples for 13vPnC serotypes: 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F and 7 additional serotypes: 8, 10A, 11A, 12F, 15B, 22F, 33F. Assay results below the LLOQ were set to 0.5 \* LLOQ. GMC and corresponding 2-sided 95% CIs were calculated by exponentiating mean logarithm of concentration, and the corresponding 2-sided 95% CIs (based on Student's t distribution).

Pneumococcal serotype-specific IgG concentrations were measured for serum samples for 13vPnC serotypes: 1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, and 23F and additional serotypes: 8, 10A, 11A, 12F, 15B, 22F and 33F. Assay results below the LLOQ were set to 0.5 \* LLOQ. GMC and corresponding 2-sided 95% CIs were calculated by exponentiating mean logarithm of concentration, and the corresponding 2-sided 95% CIs (based on Student's t distribution).

Local reactions included pain at injection site, redness and swelling, recorded by parent's/legal guardians of participants in an electronic diary (e-diary). Redness and swelling were measured and recorded in measuring device (caliper) units. 1 measuring device unit =0.5 centimeter (cm). Redness and swelling were graded as mild: greater than (\>) 0.0 to 2.0 cm; moderate: \>2.0 to 7.0 cm; and severe: \>7.0 cm. Pain at injection site was graded as mild: hurt if gently touched; moderate: hurt if gently touched with crying; severe: limited limb movement.

A SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; congenital anomaly/birth defect and other important medical events.

An NDCMC was defined as a significant disease or medical condition, not previously identified, that is expected to be persistent or was otherwise long-lasting in its effects.

Local reactions were recorded using an electronic diary. Local reactions included redness, swelling and pain at the injection site. Redness and swelling were graded as mild (0.5 to 2.0 cm), moderate (\>2.0 to 7.0 cm) and severe (\>7.0 cm). Pain at injection site was graded as mild (hurt if gently touched example, whimpered, winced, protested, or withdrew), moderate (hurt if gently touched, with crying), and severe (caused limitation of limb movement).

A SAE was any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalisation or prolongation of existing hospitalisation; was life-threatening; resulted in persistent or significant disability/ incapacity; congenital anomaly/birth defect and other important medical events. 95% CI was based on the Clopper and Pearson method.

An NDCMC was defined as a significant disease or medical condition, not previously identified, that was expected to be persistent or was otherwise long-lasting in its effects. 95% CI was based on the Clopper and Pearson method.

Pre-specified levels of serotypes were as follows: for serotype 1, 3, 4, 6A, 7F, 9V, 14, 18C, 19F, 23F, 8, 10A, 11A, 12F, 15B, 22F, 33F: \>=0.35 microgram per mL (mcg/mL), for serotype 5: \>=0.23 mcg/mL, for serotype 6B: \>=0.10 mcg/mL and for serotype 19A: \>=0.12 mcg/mL. 95% CI was based on the Clopper and Pearson method.

Concentrations of anticapsular IgG for the 20 pneumococcal serotypes (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F, 8, 10A, 11A, 12F, 15B, 22F, and 33F) were determined in all participants at 1 month after Dose 4 using the Luminex assay. Results were expressed as IgG concentrations. GMCs and 2-sided CIs were calculated by exponentiating the mean logarithm of the concentrations and the corresponding CIs based on the Student's t distribution. Assay result below LLOQ was set to 0.5\*LLOQ. Geometric mean ratios (GMRs) were reported in statistical analysis section and were calculated by exponentiating mean difference of logarithm of concentration and corresponding 2-sided 95% CIs (based on Student's t distribution).

Concentration of antibody to diphtheria toxoid (predefined level ≥0.1 IU/mL), tetanus toxoid (predefined level ≥0.1 IU/mL), IgG antibodies to pertussis antigens (pertussis toxin, filamentous hemagglutinin and pertactin, each with the predefined level as the 5th percentile observed in the 13vPnC group), hepatitis B antibody (in milli-international units per mL \[mIU/mL\]) (predefined level ≥10 mIU/mL), neutralizing antibody (NA) titers to poliovirus types 1, 2, and 3 (predefined level NA titer ≥1:8), Haemophilus influenzae type b (Hib) (≥0.15 μg/mL) were determined on subsets of sera collected at the immunogenicity time point 1 month after Dose 3. The antibody levels were measured by a validated multiplex Luminex immunoassay. The concomitant immune responses were measured on random subsets.