Acinetobacter is a gram negative coconobacillus which can lead to strains resistant to all commercially available antibiotics. The bacteria are commonly isolated from the hospital environment from an organism of questionable pathogenicity to an infectious agent of importance. Acinetobacter is colonizing mostly in irrigating solutions and intravenous solutions such as patient’s respiratory secretions, wounds and urine.
The occurrence of Acinetobacter isolates in respiratory discharges in intubated patients may symbolize colonization. Caution must be exercised in defining whether the isolate is because of colonization or is truly causing infection.