Definition

Escherichia coli ( E. coli ) infection is caused by a bacteria. It is the leading cause of bloody diarrhea.

Causes

This infection is caused by some types of the E. coli bacterium. Most E. coli infections are caused by:

    
  • Eating undercooked beef, especially ground beef
  • Drinking contaminated water
  • Drinking unpasteurized milk
  • Working with cattle
  • Digestive Pathway Through Stomach and Intestines

    Digestive pathway

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    Risk Factors

    This condition is more common in children and older adults.

    Factors that increase your chance of developing E. coli infection include:

        
  • People with another illness
  • Working with cattle
  • Living in northern states
  • Symptoms

    Symptoms of E. coli infection include:

        
  • Abdominal cramps
  • Watery diarrhea
  • Dehydration
  • Fatigue
  • Bright red, bloody stools
  • Mild fever
  • Nausea or vomiting
  • Diagnosis

    You will be asked about your symptoms and medical history. A physical exam will be done. Your waste material may be tested. This can be done with a stool culture.

    Treatment

    Talk with your doctor about the best plan for you. Treatment options include:

    Fluid Replacement and Monitoring

    Most people will get better in 5-10 days. They rarely need a specific treatment. Avoid medication that stops diarrhea. Drink plenty of water and fluids. Fluids through an IV line may be needed in cases of severe dehydration .

    Treatment for Hemolytic Uremic Syndrome (HUS)

    HUS is a life-threatening condition. It occurs in some people with E. coli infection. HUS may need to be treated with blood transfusions and kidney dialysis . Symptoms may include:

        
  • Pale complexion, tiredness, and irritability
  • Small, unexplained bruises, or bleeding from the nose or mouth—caused by problems in the body’s clotting mechanism
  • Kidney Dialysis

    Dialysis pump

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    Prevention

    To help prevent E. coli infection:

        
  • Cook all ground beef and hamburger thoroughly.
  • Avoid eating undercooked hamburger or other ground beef.
  • Keep raw meats separate from ready-to-eat foods.
  • Wash hands, counters, and utensils with hot soapy water after they are exposed to raw meat.
  • Drink only pasteurized milk, juice, and cider.
  • Wash fruits and vegetables under running water.
  • Drink municipal water that has been treated with a disinfectant.
  • Wash hands after bowel movements and after changing soiled diapers.