Microbiological evaluation of two hand hygiene procedures achieved by healthcare workers during routine patient care: a randomized study

The aim of this study was to evaluate the comparative microbiological efficacy of hand rubbing and handwashing in healthcare workers from different wards, with particular emphasis on transient flora, and to assess predisposing factors for hand contamination after patient care in everyday practice. Over a six-month period, 50 healthcare workers were randomly assigned, using a crossover design, to perform handwashing with unmedicated soap and hand rubbing with an alcoholic solution following a healthcare procedure. Imprints of palms and fingertips were taken separately before and after each hand hygiene procedure. The number of colonies per plate was counted and transient pathogens were identified. Risk factors for hand contamination were determined. Hand rubbing produced a significantly greater reduction in microbiological load than handwashing ( P