Serotyping and evaluation of the virulence in mice of Streptococcus suis strains isolated from diseased pigs

Adrienny T R Costa, Francisco C F Lobato, Vera L V Abreu, Ronnie A. Assis, Ronaldo Reis, Francisco A Uzal

Research output: Contribution to journalArticle

17 Scopus citations


A total of 110 strains of Streptococcus suis, isolated from diseased pigs in Brazil were serotyped and analyzed for virulence. Serotyping of the strains resulted in the following classification: 42 strains of serotype 2 (38.2%), 10 strains of serotype 14 (9.1%), seven strains of serotype 9 (6.4%), three strains each of serotype 7 and 11 (2.7%), two strains each of serotype 1 and 8 (1.8%) and one strain each of serotypes 1/2, 3, 5, 6 and 10 (0.9%). Cross reactions among serotypes 1, 14 and 7 were observed in 21 strains (19.1%). Only 41.9% of the strains were lethal for mice using the pathogenicity test.

Original languageEnglish (US)
Pages (from-to)113-115
Number of pages3
JournalRevista do Instituto de Medicina Tropical de Sao Paulo
Issue number2
StatePublished - Mar 2005



  • Diseased pigs
  • Serotyping
  • Streptococcus suis
  • Virulence in mice

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this