Catalog Home Page

Clonal analysis and virulence of Australian isolates of Streptococcus suis type 2

Mwaniki, C.G., Robertson, I.D., Trott, D.J., Atyeo, R.F., Lee, B.J. and Hampson, D.J. (1994) Clonal analysis and virulence of Australian isolates of Streptococcus suis type 2. Epidemiology and Infection, 113 (02). pp. 321-334.

[img]
Preview
PDF - Published Version
Download (2072kB) | Preview
    Link to Published Version: http://dx.doi.org/10.1017/S095026880005175X
    *Subscription may be required

    Abstract

    Multilocus enzyme electrophoresis was used to divide 124 Australian isolates of Streptococcus suis type 2 into 17 electrophoretic types (ETs). Isolates in ET 1 were the most frequent cause of disease amongst Western Australian pigs, but isolates of ET 8 were more commonly associated with disease in other Australian states. Multiple isolates from 10 of 19 farms all belonged to the same ET, whilst isolates from the other farms belonged to between 2 and 4 different ETs. Some isolates could be differentiated further by DNA restriction endonuclease analysis, whilst others with the same restriction pattern were located in different, but closely-related ETs. Fourteen isolates were tested for their virulence in mice. Most caused disease if given in high numbers, but isolates in ET 1 were virulent at lower dose rates. This virulent clone also was distinguished by the fact that 80% of isolates produced extracellular factor (EF).

    Publication Type: Journal Article
    Murdoch Affiliation: School of Veterinary Studies
    Publisher: Cambridge University Press
    Copyright: © 1994 Cambridge University Press
    URI: http://researchrepository.murdoch.edu.au/id/eprint/11620
    Item Control Page

    Downloads

    Downloads per month over past year