Serotyping and evaluation of the virulence in mice of Streptococcus suis strains isolated from diseased pigs.
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.
Costa
Adrienny T R
AT
IPEVE, Instituto de Pesquisas Veterinárias Especializadas, Belo Horizonte, MG, Brazil.
Lobato
Francisco C F
FC
Abreu
Vera L V
VL
Assis
Ronnie A
RA
Reis
Ronaldo
R
Uzal
Francisco A
FA
D000818:Animals; D001938:Brazil; D003429:Cross Reactions; D051379:Mice; D012703:Serotyping; D013290:Streptococcal Infections / Q000382:microbiology / Q000662:veterinary*; D017011:Streptococcus suis / Q000145:classification* / Q000302:isolation & purification / Q000472:pathogenicity; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*