Severe diarrhea in a 4-month-old baby girl with acute gastroenteritis: a case report and review of the literature.

A 4.5-month-old baby girl presented to hospital with a 2-day history of watery diarrhea and fever. Rehydration and electrolytic balance were restored with intravenous fluid therapy followed by oral rehydration solution but diarrhea did not improve by the fourth day of hospitalization despite treatment with a probiotic.