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Applied and Environmental Microbiology, July 2001, p. 3325-3327, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3325-3327.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

Incidence of Klebsiella Species in Surface Waters and Their Expression of Virulence Factors

R. Podschun,1,* S. Pietsch,1 C. Höller,2 and U. Ullmann1

Department of Medical Microbiology and Virology1 and Department of Hygiene and Environmental Medicine,2 University of Kiel, Kiel, Germany

Received 30 November 2000/Accepted 6 May 2001

To investigate the occurrence of different Klebsiella spp. in aquatic environments, a total of 208 samples of natural surface waters was examined. From half (53%) of these samples, 123 Klebsiella strains were isolated, the most common species being Klebsiella pneumoniae. A comparison of these isolates to a group of 207 clinical K. pneumoniae isolates demonstrated that water isolates of K. pneumoniae, unlike those of K. oxytoca and K. planticola, are as capable as clinical isolates of expressing putative virulence factors such as serum resistance and capsular polysaccharides, pili, and siderophores.

* Corresponding author. Mailing address: Department of Medical Microbiology and Virology, University of Kiel, Brunswiker Str. 4, 24105 Kiel, Germany. Phone: 49-431-597-3305. Fax: 49-431-597-3296. E-mail: podschun{at}medmicrobio.uni-kiel.de.

Applied and Environmental Microbiology, July 2001, p. 3325-3327, Vol. 67, No. 7
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.7.3325-3327.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


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