Infl uenza in health care workers (HCWs) is common, and acquisition in the workplace is well documented. An uncontrolled study found that after an infl uenza epidemic in Glasgow, Scotland, 120 (23.2%) of 518 HCWs seroconverted (4) . Early in 2009, twelve HCWs with probable or possible work place acquisition of pandemic infl uenza were reported in the United States. None had worn full PPE (5) .