Dataset from Assessment of Long-term Antibody Persistence After a Booster Dose of GSK Biologicals' Hib & Meningococcal C Vaccine (Menitorix™) 811936 Given at 12-15 Months of Age to Subjects Primed With 3 Doses of Menitorix™ at 2, 3, 4 Months of Age

The purpose of this study is to evaluate the long-term antibody persistence at 12, 24 and 48 months after the administration of a booster dose of Menitorix™, given at 12-15 months of age. The children had previously received 3 doses of Menitorix™ and Infanrix™ IPV or Meningitec™ and Pediacel™ in infancy. In addition, the antibody persistence is to be investigated in children of 40-43 months of age who received a 3-dose primary vaccination of a MenC conjugate vaccine and a Hib containing vaccine in infancy without a booster dose of MenC conjugate and Hib vaccine in the second year of life. This protocol posting deals with objectives & outcome measures of the extension phases at 12, 24 and 48 months after the booster phase. The objectives & outcome measures of the primary phase & booster phase at 12 to 15 months are presented in a separate protocol posting (NCT number =00258700 ).