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Numerical index of the discriminatory ability of biotyping and resistotyping for strains of Escherichia coli

Published online by Cambridge University Press:  15 May 2009

P. B. Crichton  and
D. C. Old
P. B. Crichton
Affiliation:
Department of Medical Microbiology, The University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY
D. C. Old
Affiliation:
Department of Medical Microbiology, The University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY
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Summary

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A discrimination index was applied to assess the value of biotyping and resistotyping, used alone or together, for the subspecific discrimination of Escherichia coli. The index was high when 599 strains from a wide variety of sources were examined by full biotyping with 10 tests. Although the discrimination achieved was lower when a sub-collection of 333 strains was examined, that finding probably indicated that many of the latter strains were of urinary origin and represented a limited number of uropathogenic clones. Combined biotyping and resistotyping provided a higher level of strain discrimination than either method used on its own. Results suggest that these typing methods may be used with confidence for the discrimination of strains of E. coli.

Type
Research Article
Information
Epidemiology & Infection , Volume 108 , Issue 2 , April 1992 , pp. 279 - 286
Copyright
Copyright © Cambridge University Press 1992

References

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