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The occurrence and significance to animal health of salmonellas in sewage and sewage sludges

Published online by Cambridge University Press:  15 May 2009

P. W. Jones ,
Lynne M. Rennison ,
V. H. Lewin  and
D. L. Redhead
P. W. Jones
Affiliation:
Institute for Research on Animal Diseases, Compton, Newbury, Berkshire
Lynne M. Rennison
Affiliation:
Institute for Research on Animal Diseases, Compton, Newbury, Berkshire
V. H. Lewin
Affiliation:
Thames Water Authority, Vales Division, Oxford
D. L. Redhead
Affiliation:
Thames Water Authority, Vales Division, Oxford
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A total of 882 samples of settled sewage, sewage sludges and final effluents from eight sewage treatment plants were examined for the presence of salmonellas. Of these samples 68% were positive, isolations being made most frequently from settled sewage (85%), raw sludge (87%) and anaerobically digested sludge (96%). Fewer isolations were made from final effluent (24%) and processed sludges (58%). Samples usually contained less than 200 salmonellas/100 ml and arguments are presented that such concentrations should not lead to disease in animals if suitable grazing restrictions are followed.

Type
Research Article
Information
Journal of Hygiene , Volume 84 , Issue 1 , February 1980 , pp. 47 - 62
Copyright
Copyright © Cambridge University Press 1980

References

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