A group of fraternity brothers show up at the student health clinic with complaints abdominal cramping and diarrhea of recent onset. There is no history of recent travel. A few days ago, the fraternity hosted a picnic with one of the sororities on campus. The main dish was barbecue chicken.
Labs: Stool sample contains gram negative rods and PMN leukocytes, does not ferment lactose. Produces H2S.