This Year 3 extension of the main study rota-028, 029 or 030 is conducted to evaluate vaccine efficacy against severe rotavirus (RV) gastroenteritis (GE) during third year of life in infants previously vaccinated with human rotavirus (HRV) vaccine or placebo in the following schedules:

at 3 and 4 months of age in study rota-028; at 2 and 4 months of age in study rota-029 or rota-030.

The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Note that no new subjects will be recruited in this extension phase studies.

The expected total enrolment for the primary studies was as follows:

rota-028: 5700 rota-029: 3018 rota-030: 1102

Inclusion Criteria:

• Subjects who the investigator believes that their parents/guardians can and will comply with the requirements of the protocol should be enrolled in the study.
• A male or female between, and including, 6 and 12 weeks of age in Hong Kong and Taiwan or 11 to 17 weeks of age in Singapore at the time of the first vaccination according to the country recommendations for the routine vaccination schedules.
• Written informed consent obtained from the parent or guardian of the subject, prior any study procedure.
• Free of obvious health problems as established by medical history and clinical examination before entering into the study.

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 placebo, or planned use during the study period.
• Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs since birth.
• Child is unlikely to remain in the study area for the duration of the study
• Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus (HIV) infection.
• History of allergic disease or reaction likely to be exacerbated by any component of the vaccine.
• Administration of immunoglobulins and/or blood products since birth or planned administration during the study period. Oral intake of immunoglobulins is allowed.
• Any clinically significant history of chronic gastrointestinal disease including any uncorrected congenital malformation of the gastrointestinal tract or other serious medical condition as determined by the investigator.
• First or second degree of consanguinity of parents.

Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Adverse events were not systematically followed up in this study. Only the adverse events (and serious adverse events) leading to subject withdrawal or drop-out were collected.