Comparing the Efficacy of Two Oral Rehydration Solutions, With or Without the Probiotic Lactobacillus Reuteri DSM 17938 and Zinc, on the Duration and Severity of Acute Gastroenteritis in 6 - 36 Months Old Children in Out-patient Care

Exclusion Criteria

• •Diarrhoea with a duration of \>48 hours at the time of recruitment.
• •Clinical signs of severe dehydration at the time of recruitment or in need of hospitalisation.
• •Clinical signs of a coexisting severe acute systemic illness (meningitis, sepsis, pneumonia).
• •Primary or secondary immunodeficiency.
• •Severe chronic diseases including cystic fibrosis, diabetes mellitus, neurodevelopmental delay or severe gastrointestinal disorders.
• •Use of probiotics in the previous 2 weeks before recruitment.
• •Use of antibiotics in the previous 2 weeks before recruitment.