An adverse experience (AE) is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the Sponsor's product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a preexisting condition which is temporally associated with the use of the Sponsor's product, is also an adverse experience.

Injection-site AEs reported by \>=2% of participants in one or more vaccination groups were assessed.

Systemic AEs reported by \>=2% of participants in one or more vaccination groups were assessed.

A serious adverse event (SAE) is an AE that results in death, is life threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment.

A SAE is an AE that results in death, is life threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. SAEs deemed by the investigator to be possibly, probably, or definitely related to study vaccine were reported.

Pneumococcal serotype-specific IgG was measured in serum using an electrochemiluminescence (ECL) assay.