Outbreak of Pseudomonas aeruginosa and Klebsiella pneumoniae bloodstream infections at an outpatient chemotherapy center.

Background: Four patients were hospitalized July 2011 with Pseudomonas aeruginosa bloodstream infection (BSI), 2 of whom also had Klebsiella pneumoniae BSI. All 4 patients had an indwelling port and received infusion services at the same outpatient oncology center.

Methods: Cases were defined by blood or port cultures positive for K pneumoniae or P aeruginosa among patients receiving infusion services at the oncology clinic during July 5-20, 2011.