One of the commonly-found bacteria in the environment like soil and water is Acinetobacter which can cause infections and a range of diseases. Acinetobacter baumannii is the most common cause of Acinetobacter infection and the most at risk of this infection are patients in a health care facility, those who have devices connected to the body such as catheters and ventilators, those who have undergone surgery, have been in the intensive care unit, and and those who have been staying in the hospital for a long time. Other risk factors may include a weak immune system and chronic diseases such as lung diseases and diabetes. The bacteria may spread through surfaces and equipment which are not properly sanitized. Contaminated hands may also allow person-to-person transmission.