A new type of Salmonella ( S. ballerup ) with Vi-antigen
1940; Cambridge University Press; Volume: 40; Issue: 2 Linguagem: Inglês
10.1017/s0022172400027790
ISSN2396-8184
Autores Tópico(s)Viral gastroenteritis research and epidemiology
Resumo1. 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].Z 14 . 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.
Referência(s)