Bugs Causing Nosocomial Infections Bugs Causing Nosocomial Infections Bug Key associations Escherichia coli UTI/urinary catheterization Staphylococcus aureus Wound infection Pseudomonas aeruginosa Burns, respirators ("AIRuginosa") Legionella pneumophila Water aerosols CMV, RSV Neonates in nursery Proteus mirabilis UTI/urinary catheterization HBV Healthcare workers in dialysis unit Candida albicans Total parenteral nutrition (TPN) UTI = think E. coli Wound = think S. aureus Burns = think Pseudomonas Water = think Legionella