Impact of the first hand sanitizing relay world record on compliance with hand hygiene in a hospital.

Staff of a large hospital in Hong Kong attempted and set the first Guinness World Record for the most participants in a hand sanitizing relay in May 2014. After this event, average compliance with hand hygiene increased from 72% (95% CI, 70%-74%) in 2013 to 85% (95% CI, 83%-87%) in June-July 2014, and the conceptual understanding of good hand hygiene practices improved.