Dataset from A Single-blind, Randomized, Controlled, Multinational Study for the Evaluation of Safety of GlaxoSmithKline (GSK) Biologicals' Investigational Vaccination Regimen Compared to Monovalent Haemophilus Influenzae Type b (Hib) Control Vaccine in Healthy Infants at 2, 4, 6, and 12 to 15 Months of Age.

The primary phase of this study is evaluating the safety of Hib-MenCY-TT vaccine compared to a control group receiving licensed Hib conjugate vaccine, when each are co-administered with Pediarix® to healthy infants at 2, 4, and 6 months of age. This protocol posting deals with objectives & outcome measures of the primary phase of the study. The objectives & outcome measures of the Booster phase are presented in a separate protocol posting (NCT number = 00345683). The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007