Aerobic, non-fermenting, gram-negative rod.
May be acquired from diverse environmental sources (e.g. tap water).
Bronchiectasis may be colonized (e.g. CF patients).
Must distinguish colonization from clinically significant infection.
Most common reason for isolation is colonization of the respiratory tract.
Most common true infections:
Bloodstream infection (usually from vascular catheter)
Other manifestations rare:
May require contact precautions.
True pneumonia more likely in ICU and oncology patients, those with advanced age and after/during treatment with broad-spectrum antimicrobial use.