Acinetobacter baumanniI

Acinetobacter baumannii is a pleomorphic aerobic gram-negative bacillus (similar in appearance to Haemophilus influenzae on Gram stain) commonly isolated from the hospital environment and hospitalized patients. A baumannii is a water organism and preferentially colonizes aquatic environments. This organism is often cultured from hospitalized patients' sputum or respiratory secretions, wounds, and urine. Acinetobacter commonly colonizes irrigating solutions and intravenous solutions.

Acinetobacter is an organism of low virulence, but it is capable of causing infection. Most Acinetobacter isolates recovered from hospitalized patients, particularly those recovered from respiratory secretions and urine, represent colonization rather than infection.

http://www.emedicine.com/med/topic3456.htm

http://en.wikipedia.org/wiki/Acinetobacter_baumannii