This microbe is frequently isolated from the colon of humans and animals, and is an opportunistic pathogen. Infection typically occurs after some irritation or injury – circulatory system catheterization, surgery, wound. It can also be isolated from natural environments, such as sewage, soil, dairy products, and other foods. It is a Gram negative straight rod occurring in singles and pairs, which exhibits motility using peritrichous flagella. Gas is produced from glucose. Growth is at 35-37 C.