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Bacterial pathogen incidences in sludge from Swedish sewage treatment plants
National Veterinary Institute, Uppsala.
National Veterinary Institute, Uppsala.
National Veterinary Institute, Uppsala.
Department of Food Hygiene, Swedish University of Agricultural Sciences, Uppsala.ORCID iD: 0000-0003-0154-9452
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2004 (English)In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 38, 1989-1994 p.Article in journal (Refereed) Published
Abstract [en]

This study surveyed the presence of bacterial pathogens in eight Swedish sewage treatment plants (STPs), with four different treatment methods, focusing on detection of zoonotic bacteria in rawand treated sludge. Salmonella spp., Listeria monocytogenes, Campylobacter coli and jejuni, Escherichia coli O157 and indicator bacteria were investigated. Samplings were performed from July 2000 to June 2002, resulting in 64 raw sludge samples and 69 treated sludge samples. The samples from rawsludge (67%) and treated sludge (55%) were positive for Salmonella; 49 different serotypes were detected. Restriction enzyme analysis and pulsed field gel electrophoresis of Salmonella serotypes indicated that Salmonella persists in STPs and that there is a continuous supply of newstrains. There are differences in treatment methods concerning the reduction of pathogens and indicator bacteria. If spread on arable land, sludge increases the environmental load of pathogens; this increases the risk for spreading diseases to people and animals.

Place, publisher, year, edition, pages
Oxford, United Kingdom: Pergamon-Elsevier Science , 2004. Vol. 38, 1989-1994 p.
Keyword [en]
Sewage sludge, salmonella, PFGE, indicator bacteria, agriculture use
National Category
Medical and Health Sciences Microbiology
Research subject
Culinary Arts and Meal Science
Identifiers
URN: urn:nbn:se:oru:diva-44376DOI: 10.1016/j.watres.2004.01.031ISI: 000221204500005PubMedID: 15087179Scopus ID: 2-s2.0-1942422100OAI: oai:DiVA.org:oru-44376DiVA: diva2:806601
Available from: 2015-04-20 Created: 2015-04-20 Last updated: 2017-10-17Bibliographically approved

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CiteExportLink to record
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