What are the symptoms and how is it diagnosed?

Symptoms can include severe diarrhea (including bloody diarrhea), fever, chills, abdominal pain, and occasionally vomiting. The symptoms generally appear one to three days after exposure.

Your doctor can check for any of these three infections in a sample of stool of blood. A laboratory will attempt to "grow out" the bacteria in a test tube and will notify your doctor if Salmonella, Campylobacter, or Shigella is found in the samples.

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