Gram ⊝ coccobaccili. Lactose non-fermenter. Oxidase ⊝.

Reservoir: ZoonoticTransmission: Pet feces (eg, puppies), contaminated milk, pork- Prominent in cold, northern climates (Michigan, Scandinavia)

Presentation:- Acute diarrhea (may be bloody in severe cases)- Pseudoappendicitis: right lower abdominal pain due to mesenteric adenitis and/or terminal ileitis.

Diagnosis: Stool culture, 25˚C, cold enrichment