Dataset from A Phase II, Open (Partially Double-blind), Randomised, Controlled, Multicentre, Primary Vaccination Study to Evaluate the Immunogenicity, Reactogenicity and Safety of Three Different Formulations of GSK Biologicals' Combined Haemophilus Influenzae Type B-meningococcal Serogroups C and Y- Conjugate Vaccine and One Formulation of GSK Biologicals' Haemophilus Influenzae Type B-meningococcal Serogroup C Conjugate Vaccine Each Given Concomitantly With InfanrixTM Penta, Versus MeningitecTM, Given Concomitantly With InfanrixTM Hexa in Infants According to a 2-3-4 Month Schedule

This study evaluated the safety and immunogenicity of 3 formulations of Hib-MenCY-TT vaccine and 1 formulation of Hib-MenC-TT vaccine compared to a control group receiving licensed meningococcal serogroup C conjugate vaccine, each administered at 2, 3, and 4 months of age. Antibody persistence and immune responses to booster vaccinations were additionally assessed at 12 to 18 months of age.