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Mayo Clin Proc. 2000 Jul;75(7):705-8.

Effects of 4 hand-drying methods for removing bacteria from washed hands: a randomized trial.

Author information

1
Division of Clinical Microbiology, Mayo Clinic, Rochester, MN 55905, USA.

Abstract

OBJECTIVE:

To evaluate the effects of 4 different drying methods to remove bacteria from washed hands.

SUBJECTS AND METHODS:

One hundred adult volunteers participated in this randomized prospective study. All bacterial counts were determined using a modified glove-juice sampling procedure. The difference was determined between the amounts of bacteria on hands artificially contaminated with the bacterium Micrococcus luteus before washing with a nonantibacterial soap and after drying by 4 different methods (cloth towels accessed by a rotary dispenser, paper towels from a stack on the hand-washing sink, warm forced air from a mechanical hand-activated dryer, and spontaneous room air evaporation). The results were analyzed using a nonparametric analysis (the Friedman test). By this method, changes in bacterial colony-forming unit values for each drying method were ranked for each subject.

RESULTS:

The results for 99 subjects were evaluable. No statistically significant differences were noted in the numbers of colony-forming units for each drying method (P = .72).

CONCLUSION:

These data demonstrate no statistically significant differences in the efficiency of 4 different hand-drying methods for removing bacteria from washed hands.

PMID:
10907386
DOI:
10.4065/75.7.705
[Indexed for MEDLINE]

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