Acinetobacter bacteria can be an issue for people who have been admitted to hospital. Healthy people are not at high risk as the bacteria are generally considered to be nonpathogenic. However, a person who has sustained an injury may become infected by Acinobacter in and on dirt or debris. This type of bacteria can also be spread through person-to-person contact or via contact with contaminated surfaces.
It's ironic to think that someone can be admitted to hospital for surgery or after an accident and be relatively healthy, only to develop an infection from these bad bacteria after being admitted. They can be difficult to treat, and the people who are most at risk are those who are in an intensive care ward, those who have sustained traumatic injuries, and those who are very ill.