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Genetic relationships among strains of Salmonella enteritidis in a national epidemic in Switzerland

Published online by Cambridge University Press:  15 May 2009

J. Stanley ,
A. P. Burnens ,
E. J. Threlfall ,
N. Chowdry  and
M. Goldsworthy
J. Stanley
Affiliation:
NCTC Plasmid and Molecular Genetics Unit and London NW9 5HT, UK
A. P. Burnens
Affiliation:
Swiss National Reference, Laboratory for Foodborne Diseases, University of Berne, Längass-Strasse 122, CH3012 Berne, Switzerland
E. J. Threlfall
Affiliation:
Division of Enteric Pathogens, Central Public Health Laboratory, 61 Colindale Avenue, London NW9 5HT, UK
N. Chowdry
Affiliation:
NCTC Plasmid and Molecular Genetics Unit and London NW9 5HT, UK
M. Goldsworthy
Affiliation:
NCTC Plasmid and Molecular Genetics Unit and London NW9 5HT, UK
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Summary

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A collection of Salmonella enteritidis strains isolated in Switzerland (1965–90) was characterized. The phage type and plasmid profile of isolates were compared with the copy number and insertion loci of the DNA insertion element IS200. Three clonal lines of S. enteritidis were identified by IS200 profile; the various phage types were subtypes reproducibly associated with one of these lines. All human and poultry isolates contained a 38 Mda plasmid which hybridized with a mouse virulence-associated gene probe. In S. enteritidis, the IS200 profile is a race-specific molecular marker of the chromosome, and may be particularly applicable for studying the epidemiology of less common serovars.

Type
Research Article
Information
Epidemiology & Infection , Volume 108 , Issue 2 , April 1992 , pp. 213 - 220
Copyright
Copyright © Cambridge University Press 1992

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