Hospital-based Surveillance to Collect Prospective Data to Estimate the Disease Burden of Severe RV GE in Sweden

Inclusion Criteria: * Written informed consent obtained from parent or guardian * A male/ female child aged less than 5 years. On the day of fifth birthday the subject is not eligible for participation * Hospitalised for acute GE * Developed symptoms of acute GE 72 hours after hospitalisation * Stool sample should be positive for the presence of rotavirus, which will be detected either by Vikia test or by ELISA Inclusion criteria for household members: * Family members including care-takers and sibling staying in the same house and who spend most of the nights (50%) with the sick child. * Written permission from care-takers or siblings or their parents. Exclusion Criteria: \- All children in the neonatal wards.