Dataset from Study to Show Lot-to-lot Consistency of Hib-MenAC Mixed With Tritanrix™-HBV, Its Non-inferiority to Tritanrix™-HBV/Hiberix™ With or Without Meningitec™, and MenA Response in 2, 4, 6 Month Infants With Hepatitis B Birth Dose

The purpose of the study is to demonstrate consistent results in 3 production lots of Hib-MenAC vaccine when extemporaneously mixed with Tritanrix™-HepB and administered as a single injection, with respect to immunogenicity, safety and reactogenicity. Tritanrix™-HepB/Hiberix™ given alone and Wyeth Lederle's meningococcal C conjugate vaccine (Meningitec™), given concomitantly with Tritanrix™-HepB/Hiberix™ will be used as benchmark vaccines for all antigens except for MenA. The immunogenicity of MenA will also be evaluated.