A 5-month-old Hispanic boy, previously healthy, presents to the emergency department (ED) for 5 days of fever, 3 days of diarrhea and rash, and 2 days of vomiting. The parents brought their son to the ED because of his persistent fever up to 104°F and decreased oral intake. He has no recent travel and no known sick contacts. His immunizations are up to date and he has never been hospitalized. |