Probiotic Prophylaxis of Hirschprung's Disease Associated Enterocolitis (HAEC)

Inclusion Criteria: * Patients eligible for enrollment will include all pediatric patients suffering from HD at an age of 12 months or younger. All patients will require consent by either parent or adult guardian Exclusion Criteria: * Patients will be excluded if children that are deemed hemodynamically unstable and require immediate operative intervention, age more than one year of age, as this may mean very delay in diagnosis and may affect the study results, or infants having major congenital anomalies with short life expectancy. Additional exclusion criteria are those patients' parents or adult guardian who refuse to undergo randomization. Finally, those children who are transferred to another non-participating hospital will be excluded.