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Contamination of hospital linen by Bacillus cereus

Published online by Cambridge University Press:  15 May 2009

D. Barrie ,
P. N. Hoffman ,
J. A. Wilson  and
J. M. Kramer
D. Barrie
Affiliation:
Department of Medical Microbiology, Charing Cross and Westminster Medical School, Fulham Palace Road, London W6 8RF
P. N. Hoffman
Affiliation:
Laboratory of Hospital Infection, Central Public Health Laboratory, 61 Colindale Avenue, London, NW9 5HT
J. A. Wilson
Affiliation:
Department of Medical Microbiology, Charing Cross and Westminster Medical School, Fulham Palace Road, London W6 8RF Laboratory of Hospital Infection, Central Public Health Laboratory, 61 Colindale Avenue, London, NW9 5HT
J. M. Kramer
Affiliation:
Food Hygiene Laboratory, Central Public Health Laboratory, 61 Colindale Avenue, London, NW9 5HT
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Summary

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An investigation into two cases of post-operative Bacillus cereus meningitis revealed that hospital linen laundered by a batch continuous washing machine was heavily contaminated by B. cereus spores. The washing machine, detergents, other chemical additives and the water supply were eliminated as the source of contamination.

It was found that the linen introduced into the washing machine had a high B. cereus spore content and that this was still present after the wash process. The spores were not killed by either the heat disinfection stage of the wash or the addition of chemical disinfectants and were not removed by the dilution in the process.

The multiplication of B. cereus was thought to have occurred on used, damp linen stored in plastic bags, particularly when ambient temperatures were high. An increase in the water flow through the washing machine was the only measure associated with a decrease in B. cereus on laundered linen.

Type
Research Article
Information
Epidemiology & Infection , Volume 113 , Issue 2 , October 1994 , pp. 297 - 306
Copyright
Copyright © Cambridge University Press 1994

References

REFERENCES

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