To Test 2 Doses of GSK Biologicals' Oral Live Attenuated Human Rotavirus (HRV) Vaccine in Healthy Infants in Co-administration With Specific Childhood Vaccines

The main objectives of this study is to determine vaccine efficacy against any rotavirus (RV) gastroenteritis (GE) during the first efficacy period.

The study has two groups: Group HRV and Group Placebo. Two oral doses administered to healthy infants who are 6-14 weeks of age at the time of Dose 1, according to a 0, 1 to 2-month schedule. Routine EPI vaccinations are given at the discretion of the investigator and according to local National Plans of Immunisation schedule in each participating country.

Eligibility Criteria:
Inclusion criteria:

* Healthy infants 6 -14 weeks of age at the time of the first study vaccination with birth weight \> 2000g whose parent/guardian sign a written informed consent and whose parents/guardians can and will comply with the requirements of the protocol (e.g., completion of the diary cards, return for follow-up visits).

Exclusion criteria:

* Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period.
* Planned administration of a vaccine not foreseen by the study protocol within 14 days before each dose of study vaccine(s) and ending 14 days after.
* Chronic administration (defined as more than 14 days) of immunosuppressants since birth. (Topical steroids are allowed.)
* History of diphtheria, tetanus, pertussis, Hib disease and/ or hepatitis B disease (in all subjects). Only for subjects in Spain: history of meningococcal group C disease. Only for subjects in France and Germany: history of disease caused by Streptococcus pneumoniae.
* History of use of experimental rotavirus vaccine.
* Previous vaccination against diphtheria, tetanus, pertussis, Haemophilus influenzae type b (in all subjects). Only for subjects in Spain: previous vaccination against meningococcal group C. Only for subjects in France and Germany: previous vaccination against Streptococcus pneumoniae.
* Any clinically significant history of chronic gastrointestinal disease including any uncorrected congenital malformation of the GI tract, IS or other medical condition determined to be serious by the investigator.
* Any confirmed or suspected immunosuppressive or immunodeficient condition based on medical history and physical examination (no laboratory testing is required).
* History of allergic disease or reaction likely to be exacerbated by any component of the vaccine.
* Acute disease at the time of enrolment. (Acute disease is defined as the presence of a moderate or severe illness with or without fever. All vaccines can be administered to persons with a minor illness such as mild upper respiratory infection with or without low-grade febrile illness, i.e. Oral temperature \<37.5°C (99.5°F) / Axillary temperature \<37.5°C (99.5°F) / Rectal temperature \<38°C (100.4°F).)
* Gastroenteritis within 7 days preceding the first study vaccine administration (warrants deferral of the vaccination).
* A family history of congenital or hereditary immunodeficiency.
* Administration of immunoglobulins and/or blood products since birth or planned administration during the study period.
* History of any neurologic disorders or seizures.
* Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests.