A 40 year old flight attendant comes into the hospital with complaints of bloody diarrhea, abdominal pain, fatigue and fever. The enteric symptoms were of rapid-onset. Physical examination reveals purpuric skin rash.
Labs: Gram negative rods that are motile, do not ferment sorbitol, ferment lactose, utilize acetate as its only source of carbon, and use tryptophan to produce indole. Culture reveals colonies with green sheen on EMB agar.