4Wei Z G, Li R, Zhang A D, et al. Characterization of Streptococcus suis isolates from the diseased pigs in China between 2003 and 2007 [J ].Vet Microbiol,2009,137 (1/2) : 196-201.
5Gottschalk M, Segura M. The pathogenesis of the meningitis caused by Streptococcus suis:the unresolved questions [J]. Vet Microbiol,2000,76 : 259-272.
6Stoats J J, Feder I, Okwumabua O, et al. Streptococcus suis, past and present [ J ]. Vet Res Commun,1997,21 : 381-407.
7Trottier S, Higgins R, Brochu G, et al. A case of human endocarditis due to Streptococcus suis in North-America [J]. Rev Infect Dis,1991,13(6) : 1251-1252.
8Wisselink H J, Smith H E, Stockhofe-Zurwieden N, et al. Distribution of capsular types and production of muramidase- released protein (MRP) and extracellular factor (EF) of Streptococcus suis strains isolated from diseased pigs in seven European countries [J ].Vet Microbiol,2000,74 : 237-248.
9Hill J E, Gottschalk M, Brousseau R, et al. Biochemical analysis, cpn60 and 16S rDNA sequence data indicate that Streptococcus suis serotypes 32 and 34, isolated from pigs, are Streptococcus orisratti [J].Vet Microbiol, 2005,107 : 63-69.
10Wisselink H, Reek F H, Vecht U, et al. Detection of virulent strains of Streptococcus suis type 2 and highly virulent strains of Streptococcus suis type 1 in tonsillar specimens of pigs by PCR [J].Veterinary Microbiology, 1999,67 (2) : 143-157.
