Costa, Adrienny T. R., et al. “ Serotyping and Evaluation of the Virulence in Mice of Streptococcus Suis Strains Isolated from Diseased Pigs ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 47, no. 2, Apr. 2005, pp. 113-5, https://revistas.usp.br/rimtsp/article/view/30898.