The following symptoms and complaints may indicate a norovirus infection:
- Acute onset of symptoms
- Pronounced feeling of illness/fatigue
- Nausea (nausea)
- Profuse vomiting
- Severe diarrhea (diarrhea)/watery diarrhea
- Abdominal pain (abdominal pain)
- Cephalgia (headache)
- Myalgia (muscle pain)
- Moderately elevated temperature; rarely fever
Symptomatology usually persists for 24 to 48 hours. Mild or asymptomatic courses may also occur.