Sudden nausea
Vomiting
Diarrhea
Stomach cramps
Abdominal pain
Bloating
Loss of appetite
Low-grade fever
Chills
Fatigue
Body aches
Headache
Symptoms starting within hours to a few days after exposure
Recent contact with someone who was sick
Recent eating of contaminated food or water
Symptoms lasting a few days and then improving
Signs of dehydration
Dry mouth
Dark urine
Dizziness
Reduced urination