Shiga Toxin Producing E Coli (STEC) | Medical Algorithm

Are you evaluating a patient?

Yes

Has the patient had?

• contact with beef made from infected cattle?

Yes

• eaten food contaminated by cattle, including unpasteurized milk?

Yes

• contact with contaminated water?

Yes

• contact with infected ruminant animals?

Yes

• contact with a person with bloody diarrhea?

Yes

Does the patient have?

• abdominal cramps and discomfort?

Yes

• diarrhea which may or may not be bloody?

Yes

• hemorrhagic colitis?

Yes

• fever?

Yes

• hemolytic-uremic syndrome (HUS) or thrombotic thrombocytopenic purpura (TTP)?

Yes

Is a culture done to screen for E. coli O157 positive?

Yes

Clinical and Laboratory Features of Shiga Toxin Producing E. Coli (STEC)