 a cluster of gram negative bloodstream infections in connecticut hemodialysis patients associated with contaminated wall boxes and prime buckets a cluster of delftia acidovorans infections occurred at a hemodialysis facility due to indirect exposures to contaminated wall boxes and possibly saline prime buckets d acidovorans was recovered from a wall box where two patients who comprised the cluster had been dialyzed the outbreak highlighted the importance of proper hand hygiene and daily disinfection of wall boxes to mitigate risk of infection 