The purpose of this study is to measure the disease burden from RV GE among children less than 5 years of age using hospital surveillance data. In addition, data collected will determine the seasonal distribution, disease severity, age distribution of RV GE. From an economic standpoint, the cost and impact of RV will also be assessed.

Inclusion Criteria:

• A male or female child < 5 years of age at the time of the visit (a child becomes ineligible on the day of her/his 5th birthday).
• Child is brought to the emergency room for acute GE during the study period or develop acute GE at least 48 hours after hospitalisation.
• Written informed consent obtained from the parent/guardian of the subject.
• Children with RV positive stool sample will be enrolled in the study.

Exclusion Criteria:

• Not applicable.

Children < 5 years of age seen at the selected hospital sites for acute GE (e.g. subjects treated at the hospital or visiting the emergency room for an acute GE episode or developed acute GE at least 48 hours after hospitalisation) with a rapid screen positive test result to RV.