Occurrenceanddiagnosticrelevance‐associated factorsin Streptococcus suis .Dtsch Tierarztl Waochemnschr,2003,110 ∶ 378‐.Prevalencofthesuilysingenein Streptococcussuitsstrainsiso‐latedfromdiseasedand healthy carrier pigs .Pol J Vet Sci,2005,8 ∶ 141‐.Strain‐ ......