A phase II, randomized-double, active-controlled, dose-finding clinical study to evaluate the safety, tolerability, and immunogenicity of the investigational vaccine, VAX-31, in healthy infants. Participants are given four doses at two, four, six, and 12-15 months of age, alongside routine pediatric vaccines. VAX-31 is designed to protect against 31 serotypes of pneumococcus bacteria, compared to the usual 20 serotypes covered by current pneumococcal conjugate vaccines (PCVs).
About the Study