Teaching health care students hand hygiene theory and skills: a systematic review.

Hand hygiene is the cornerstone of infection prevention but is poorly undertaken and under-appreciated by medical, nursing, and other health care students. This systematic review aimed to identify and describe strategies used to teach the theory and practice of hand hygiene, determine impact on knowledge and practice, and identify need for future education and research. Ten studies met the criteria for review. Health care students' theoretical knowledge of hand hygiene and their ability to practise are suboptimal and should be improved before they have contact with vulnerable patients. Educational input can increase knowledge and practice but the methodological heterogeneity of the studies and lack of rigour make it impossible to determine which interventions are most likely to be successful. The literature provides little evidence upon which to base educational practice in this area. There is a need for multi-centred longitudinal studies to measure effectiveness of teaching methods over time.