Local reactions included pain at injection site, swelling and redness 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). Redness and swelling were 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 activity, moderate: interfered with activity and severe: prevented daily activity.

The safety population of Stage 1 included all participants who received at least 1 dose of c7vPnC or Tdap and had post-vaccination follow-up in Stage 1 and participants who lacked any safety data were excluded from the analysis.

Local reactions included pain at injection site, swelling and redness recorded by 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: >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 activity, moderate: interfered with activity and severe: prevented daily activity.

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

Systemic events included fever, fatigue, headache, muscle pain and joint pain recorded by participants in an e-diary. Fever was categorized as: >=38.0 degrees Celsius (C), >=38.0 to 38.4 degrees C, >38.4 to 38.9 degrees C, >38.9 to 40.0 degrees C and >40.0 degrees C. Fatigue, headache, muscle pain and joint pain were graded as any, mild: did not interfere with activity, moderate: some interference with activity and severe: prevented daily routine activity.

The safety population of Stage 1 included all participants who received at least 1 dose of c7vPnC or Tdap and had post-vaccination follow-up in Stage 1 and participants who lacked any safety data were excluded from the analysis.

Systemic events included fever, fatigue, headache, muscle pain and joint pain recorded by participants in an e-diary. Fever was categorized as: >=38.0 degrees C, >=38.0 to 38.4 degrees C, >38.4 to 38.9 degrees C, >38.9 to 40.0 degrees C and >40.0 degrees C. Fatigue, headache, muscle pain and joint pain were graded as any, mild: did not interfere with activity, moderate: some interference with activity and severe: prevented daily routine activity.

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. AEs included both serious and non-serious adverse events. Serious adverse event (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs included both AEs and Non-SAEs.

The safety population of Stage 1 included all participants who received at least 1 dose of c7vPnC or Tdap and had post-vaccination follow-up in Stage 1 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 1 included all participants who received at least 1 dose of c7vPnC or Tdap and had post-vaccination follow-up in Stage 1 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 1 included all participants who received at least 1 dose of c7vPnC or Tdap and had post-vaccination follow-up in Stage 1 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

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

The safety population of Stage 2 included all participants who received at least 1 dose of c7vPnC or PPSV23 and had post-vaccination follow-up in Stage 2 and participants who lacked any safety data were excluded from the analysis.

Antibody-mediated serum OPA against the 7 pneumococcal serotypes specific to c7vPnC (serotypes 8, 10A, 11A, 12F, 15B, 22F and 33F) were measured using a pneumococcal OPA assay. Results were expressed as OPA GMTs. Assay results below the lower limit of quantitation (LLOQ) were set to 0.5*LLOQ in the analysis. Evaluable immunogenicity population = EIP.

EIP Stage 1:eligible participants with no major protocol deviations, received assigned vaccine, blood collected was within 27-49 days post vaccination, had at least 1 valid and determinate assay result for at least 1 serotype for 1 month after vaccination. 'Number Analyzed' = participants evaluable for this outcome measure at specified rows.

Antibody-mediated serum OPA against the 7 common pneumococcal serotypes specific to c7vPnC (serotypes 8, 10A, 11A, 12F, 15B, 22F and 33F) were measured using a pneumococcal OPA assay. Results were expressed as OPA GMTs. Assay results below the LLOQ were set to 0.5*LLOQ in the analysis.

EIP Stage 2:eligible participants with no major protocol deviations, received assigned vaccine, blood collected was within 27-49 days post vaccination, had at least 1 valid and determinate assay result for at least 1 serotype for 1 month after vaccination. Here, 'Number Analyzed' = participants evaluable for this outcome measure at specified rows.

GMFR for the 7 pneumococcal serotypes (serotypes 8, 10A, 11A, 12F, 15B, 22F and 33F) from before Vaccination to one month after Vaccination. Assay results below the LLOQ were set to 0.5*LLOQ in the analysis.

EIP Stage 1:eligible participants with no major protocol deviations, received assigned vaccine, blood collected was within 27-49 days post vaccination, had at least 1 valid and determinate assay result for at least 1 serotype for 1 month after vaccination. Here, 'Number Analyzed' = participants evaluable for this outcome measure at specified rows.

GMFR for the 7 pneumococcal serotypes (serotypes 8, 10A, 11A, 12F, 15B, 22F and 33F) from before Vaccination to one month after Vaccination. Assay results below the LLOQ were set to 0.5*LLOQ in the analysis.

EIP Stage 2:eligible participants with no major protocol deviations, received assigned vaccine, blood collected was within 27-49 days post vaccination, had at least 1 valid and determinate assay result for at least 1 serotype for 1 month after vaccination. Here, 'Number Analyzed' = participants evaluable for this outcome measure at specified rows.