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. 1980 Jan;39(1):118–126. doi: 10.1128/aem.39.1.118-126.1980

Enumeration of potentially pathogenic bacteria from sewage sludges.

D J Dudley, M N Guentzel, M J Ibarra, B E Moore, B P Sagik
PMCID: PMC291294  PMID: 6243900

Abstract

To ascertain the health risks that may be posed by the land application of sewage sludges, a scheme was devised to determine the types and numbers of pathogenic and potentially pathogenic bacteria present in sludges. A processing treatment was adapted to sludge to give a homogenate which yielded the greatest numbers of viable bacteria. Conventional methods were successful in enumerating Klebsiella, Staphylococcus, gram-negative enteric bacteria, and commonly used indicator organisms. Modifications of conventional methods improved the enumeration of Salmonella, Mycobacterium sp., fluorescent Pseudomonas sp., and Clostridium perfringens. However, Shigella methodology yielded only one isolate. Utilizing the proposed scheme, the population densities of these organisms were estimated in three domestic wastewater sludges. In light of these results, the potential impact of land application of sewage sludges is discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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