S. maltophilia frequently colonizes humid surfaces such as the tubes used in mechanical ventilation and indwelling urinary catheters as well as medical devices such as suction catheters and endoscopes [REF].
In immunocompetent individuals, S. maltophilia is a relatively unusual cause of pneumonia, urinary tract infection, or bloodstream infection; in immunocompromised patients, however, S. maltophilia is a growing source of latent pulmonary infections [REF].