NDLI: Subtyping of Salmonella enterica Serotype Enteritidis Strains by Manual and Automated PstI-SphI Ribotyping

Content Provider	PubMed Central
Author	Clark, Clifford G. Kruk, Tamara M. A. C. Bryden, Louis Hirvi, Yolanda Ahmed, Rafiq Rodgers, Frank G.
Copyright Year	2003
Abstract	Salmonella enterica subsp. enterica serotype Enteritidis is not readily subtyped beyond the level of phage type (PT). A recently developed method for ribotyping of this organism, which uses a mixture of PstI and SphI (PS) for restriction of DNA (PS ribotyping), has proved useful for further subtyping of a number of PTs of this organism, including PT 4. However, it has not been extensively tested with PT 8. In the present study the PS ribotyping method was used to investigate outbreaks of both S. enterica serotype Enteritidis PT 4 and PT 8 and provided subtyping data that were consistent with information obtained from epidemiologic investigations. The method proved to be more discriminatory than phage typing and pulsed-field gel electrophoresis (PFGE) combined and was useful for investigating a pseudo-outbreak involving isolates that had identical PTs and PFGE types but that could not be linked epidemiologically. Several PS ribotypes were found within the cluster of isolates indistinguishable by other subtyping methods, confirming the epidemiologic findings. Although the PS ribotyping method proved to have a superior discriminatory ability in resolving clusters, it did not have high enough throughput for use in outbreak investigations. This method has therefore been adapted for use in automated ribotyping with a RiboPrinter, and the results were compared with those obtained by manual ribotyping. Both methods produce equivalent results and are useful for obtaining epidemiologically relevant subtyping data for S. enterica serotype Enteritidis, including PT 8 strains not extensively tested previously.
Related Links	http://dx.doi.org/10.1128/jcm.41.1.27-33.2003
Ending Page	33
Page Count	7
Starting Page	27
File Format	PDF
ISSN	00951137
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	1
Volume Number	41
Language	English
Publisher	American Society for Microbiology
Publisher Date	2003-01-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Microbiology (medical) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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