Prebiotic Fructans on the Incidence of Acute Infectious Diseases in Children

Inclusion Criteria: * Subject is healthy at the time of pre-examination * Subject is aged 3-6 years at the time of pre-examination * Subject attends a kindergarten at the time of pre-examination Exclusion Criteria: * congenital disease or malformation influencing the gastrointestinal System * children with congenital or acquired immunodeficiency * children with food intolerance, food allergy or metabolic disorder requiring special diet * children who regularly (more than 3 times per week) consumed products or food supplements containing prebiotics or probiotics * children who consumed antibiotics or laxatives within 14 days * children who had any infectious disease within 14 days at the time of pre-examination