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A new type of Salmonella (S. ballerup) with Vi-antigen*

Published online by Cambridge University Press:  15 May 2009

F. Kauffmann  and
Ebba Møller
F. Kauffmann
Affiliation:
From the Danish State Serum Institute, Copenhagen (International Salmonella Centre)
Ebba Møller
Affiliation:
From the Danish State Serum Institute, Copenhagen (International Salmonella Centre)
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1. A description is given of a new Salmonella type (S. ballerup) with Vi-antigen which was probably the cause of an attack of gastro-enteritis in man.

2. S. ballerup contains a new O- and a new H-antigen, so that the antigenic formula reads XXIX.[Vi].Z14. There is also a slight O-antigen relationship with the XIX-antigen of S. senftenberg.

3. Like S. typhi, S. ballerup has the V-W change of form, as colonies occur with or without Vi-antigen; of these the V forms are much more stable than the W forms. The V forms are O-inagglutinable.

4. As with S. typhi, the V and W forms are already distinguishable macroscopically on agar plates, the V forms being opaque, whereas the W forms are translucent.

5. S. ballerup's Vi-antigen is serologically identical with S. typhi and S. paratyphi C's Vi-antigen.

6. By means of the V form of S. ballerup it is easy to demonstrate Vi- agglutinin in typhoid sera, as there is no need to fear disturbances from O- and H-antibodies.

7. By means of a V form vaccine of S. ballerup mice can be immunized actively against a lethal infection with the typhoid V form.

8. The mouse pathogenity of S. ballerup is very low. There is no distinct difference in the pathogenity of the V and W forms of S. ballerup.

Type
Research Article
Information
Journal of Hygiene , Volume 40 , Issue 2 , March 1940 , pp. 246 - 251
Copyright
Copyright © Cambridge University Press 1940

References

REFERENCES

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