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Differential typing of Salmonella agona: type divergence in a new serotype

Published online by Cambridge University Press:  25 March 2010

Ruth Barker ,
D. C. Old  and
Zofia Tyc
Ruth Barker
Affiliation:
Bacteriology Department, University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY
D. C. Old
Affiliation:
Bacteriology Department, University of Dundee Medical School, Ninewells Hospital, Dundee DD1 9SY
Zofia Tyc
Affiliation:
Bacteriology Department, National Institute of Hygiene, Warsaw 36, Poland
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Summary

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An international collection of 419 isolates of Salmonella agona was phage typed, biotyped and colicine typed. Of 16 recognized phage types, 15 were represented. Three phage types (I, V and XVI) accounted for 84% of all isolates, were widely distributed and may be interconvertible. Biotyping afforded little type differentiation; thus 92·6% of the isolates belonged to biotype 1 a. A rhamnose non-fermenting variant line (of biotype 5a) became established in Zaire from 1979 to 1980. A maltose late-fermenting line of biotype 1 a, isolated in Scotland in 1974, did not thereafter become established. Two Col+ lines (producing colicine I b) accounted for 45 of 68 colicinogenic isolates. The implication of type diversification and the phylogenetic significance of these findings are discussed.

Type
Research Article
Information
Journal of Hygiene , Volume 88 , Issue 3 , June 1982 , pp. 413 - 423
Copyright
Copyright © Cambridge University Press 1982

References

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