A Study in Infants to Test Two Preparations (Freeze-dried or Liquid) of the Rotavirus Vaccine (HRV Vaccine).

Study to Evaluate Clinical Consistency of the Liquid Formulation of GSK Biologicals' HRV Vaccine and to Evaluate Liquid Formulation Compared to Lyophilised Formulation of the HRV Vaccine Administered as a Two-dose Primary Vaccination.

The aim of this this study is to evaluate the lot-to-lot consistency of the liquid formulation of GSK Biologicals' HRV vaccine and to evaluate the liquid formulation compared to the lyophilised formulation of GSK Biologicals' HRV vaccine when administered concomitantly with a combination childhood vaccine.

Inclusion Criteria:

• Healthy infants birth weigh >2000 g, 11 -17 weeks old at Dose 1 with written informed consent.

Exclusion Criteria:

• Allergic reaction to vaccine components; clinically significant history of chronic GI disease (uncorrected GI congenital malformation) or other serious medical condition per investigator, received vaccines or treatment prohibited by the protocol; immunocompromised.