People who are sick from Shigella infection usually start experiencing symptoms 1 to 2 days after contact with the germ. Symptoms of shigellosis include:

  • Diarrhea (sometimes bloody)
  • Fever
  • Stomach pain
  • Feeling the need to pass stool [poop] even when the bowels are empty

Some people with shigellosis will not have any symptoms.

Symptoms usually last 5 to 7 days, but some people may experience symptoms anywhere from a few days to 4 or more weeks. In some cases, it may take several months before bowel habits (for example, how often someone passes stool and the consistency of their stool) are entirely normal.

When to Contact Your Doctor

People with diarrhea should contact their healthcare provider if they have any of these symptoms:

  • Fever
  • Bloody diarrhea
  • Severe stomach cramping or tenderness
  • Dehydrated
  • Feel very sick

People who are in poor health or who have immune systems weakened from diseases (such as HIV or chemotherapy for cancer) are more likely to get sick for a longer period of time. Contact your healthcare provider if you are in one of these groups and have symptoms of shigellosis.

Learn more about diagnosis and treatment.

Rare Symptoms from Shigella Infections