II. Definitions
- Gastroenteritis
- Rapid onset Diarrhea with or without Nausea, Vomiting, fever or Abdominal Pain
- Inflammation of the Gastrointestinal Tract (Stomache and Small Intestine)
- Typical presentation is Vomiting followed by Diarrhea
III. Causes: Viral Gastroenteritis
- See Infectious Diarrhea Causes
-
Rotavirus
- Most common cause of Gastroenteritis in Children
- Fall-Winter outbreaks
- Peak ages: 6-24 months
- Typical duration 5-7 days
-
Norovirus (Norwalk Virus)
- Most common cause of Gastroenteritis in adults
- Winter outbreaks
- Affects all ages
- Typical duration 2-5 days
- Common outbreaks via Foodborne Illness in Nursing Homes, dormitories, cruise ships
- Astrovirus
- Winter outbreaks
- Affects all ages
- Typical duration 3 days
-
Adenovirus
- Summer outbreaks
- Typicall affects children
- Typical duration 6-9 days
IV. Signs: Presentations
- See Vomiting
- See Vomiting in Children
- See Diarrhea
- See Diarrhea in Children
V. Differential Diagnosis
- See Vomiting Causes
- See Waterborne Illness
- See Foodborne Illness
- See Infectious Diarrhea Causes
- See Diarrhea
- See Traveler's Diarrhea
- See Osmotic Diarrhea
- See Secretory Diarrhea
- See Acute Hepatitis Causes