Dataset from A Phase II, Randomized, Observer Blind, Controlled, Multicenter Study to Assess Immunogenicity and Antibody Persistence Following Vaccination With GSK's Candidate Combined Measles, Mumps, and Rubella Vaccine (MMR) Versus M-M-R® II as a First Dose, Both Administered Subcutaneously at 12-15 Months of Age, Concomitantly With Hepatitis A Vaccine (HAV), Varicella Vaccine (VV) and Pneumococcal Conjugate Vaccine (PCV) But at Separate Sites.

The purpose of this study is to compare two measles, mumps and rubella conjugate vaccines (manufactured by GSK and Merck and Company ) in terms of the immune response elicited and safety with a six month follow-up after first vaccination. Additionally, antibody persistence will be assessed one and two years after administration of MMR vaccine. The Protocol Posting has been updated following Protocol amendment 1 and 2, Oct 2009.