Acinetobacter is described by the Centers for Disease Control and Prevention (CDC) as a group of bacteria commonly found in the environment in places like soil and water. While there are many types, the most frequent cause of infections in humans is known as Acinetobacter baumannii., , , , Infections of the blood, urinary tract and lungs, or in wounds in other parts of the body can all be caused by Acinetobacter baumannii. It can also colonize or live in a person without causing infec.