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Monitoring the effectiveness of cleaning in four British hospitals

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Author
Cooper, Rose
Griffith, Chris J.
Malik, R. E.
Obee, Peter
Looker, N.
Date
2007
Publisher
Elsevier
ISSN
0196-6553
Metadata
Show full item record
Abstract
A survey of cleaning effectiveness was conducted in two wards in four acute hospitals in England and Wales. Surfaces were monitored immediately before and after cleaning on three separate occasions using visual assessment, adenosine triphosphate (ATP) bioluminescence, expressed in relative light units (RLUs), and microbiological methods (aerobic colony counts [ACC]), expressed in colony forming units (cfu) per cm2. Methods Comparison of data from a total of over 3000 assessments showed highly significant differences in failure rates between visual assessment and either ATP or microbiological counts. There was no significant difference in failure rates between ATP and microbiological counts. Using visual assessment, failure rates were significantly lower after cleaning than before. Using ATP or microbiological methods, failure rates were not significantly different after cleaning. Results Data obtained using both ATP and ACC, indicated considerable variability after cleaning and that failed surfaces were often well in excess of benchmark values. Conclusions Cumulatively, the results indicate that visual assessment is not a reliable indicator of surface cleanliness or of cleaning efficacy. Concerns also arise about the standards of surface cleanliness achieved after cleaning in the hospitals.
Journal/conference proceeding
American Journal of Infection Control
Citation
Cooper, R.A., Griffith, C.J., Malik, R.E., Obee, P. and Looker, N. (2007) 'Monitoring the effectiveness of cleaning in four British hospitals', American Journal of Infection Control, 35(5), pp.338-341
URI
http://hdl.handle.net/10369/333
DOI
http://dx.doi.org/10.1016/j.ajic.2006.07.015
Collections
  • Nutrition, Food and Health [72]

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