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Journal of Clinical Microbiology, 05 1995, 1206-1211, Vol 33, No. 5
J Stanley, N Baquar and A Burnens
We describe a genotyping scheme for Salmonella panama. Defined probes
specific for the 16S rRNA gene and the DNA insertion element IS200 were
generated by PCR from S. panama and were used to probe genomic Southern
blots made with enzymes selected to cut within and outside the probed
sequences. Plasmid profiles were determined. The typeability and
discriminatory power of the individual methods were compared. Ribotyping
with 16S rRNA gene probe alone was slightly more discriminatory than phage
typing, but unlike the latter, ribotyping was able to type all strains.
IS200 profiling was the single most discriminatory method for S. panama,
having an index of discrimination (D) of 0.8 and 100% typeability. Plasmid
profiling, which had moderate discriminatory power but only 50%
typeability, was valuable as an adjunct technique. The use of all three
methods together or simply the combination of IS200 profiling with the two
most discriminatory enzymes and plasmid profiling yielded a molecular
typing scheme whose discriminatory power (D = 0.97) approached the maximum
theoretical value. This should prove both useful and robust for
epidemiological investigations of S. panama.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Molecular subtyping scheme for Salmonella panama
Virus Reference Division, Central Public Health Laboratory, London, United Kingdom.
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