The infant will receive clear
 liquids for a period of time.
The usual way to treat an infant 
hospitalized with gastroenteritis is to keep the infant nothing-by-mouth
 status to rest the gastrointestinal tract. The resulting fluid volume 
deficit is treated with intravenous fluids. When the infant's condition 
is controlled (e.g., when vomiting subsides), clear liquids are then 
started slowly. Formula and juice will be started once the infant's 
vomiting has subsided and the infant has demonstrated the ability to 
tolerate clear liquids for a period of time. In this situation, there is
 no need to test the infant's blood every day for anemia. Most likely, 
the infant's serum electrolyte levels would be monitored closely. 
Typically, an infant is placed in a private room because gastroenteritis
 is most commonly caused by a virus that is easily transmitted to 
others.