Nausea
Vomiting
Diarrhea
Stomach cramps or abdominal pain
Fever
Chills
Headache
Weakness or fatigue
Loss of appetite
Symptoms starting within hours to a few days after eating
Signs of dehydration such as dry mouth, dark urine, dizziness, or little urination
Bloody diarrhea
Severe or persistent vomiting
Severe abdominal pain
Symptoms lasting more than a few days