In 1980to 1983, meningitis inpiglels causedby Streptccxxcus wexediagncAsMin Taoyuan, Tainan, Nantou, and flan counties of Taiwn. Representative 6 stains of the isolas from diseas1 animal were identified as Steptcxcxxcus R(5 stains) and Steptcxxxus S groups (1 strain).
Main clinical symptoms of the diseased piglet were reeumliency, conbulsion, ILlnlnaIY anorexia and addhng. McGt of them were underlO weeks of age. On one of the pig faims, themortalities for2yearswerel.2tol.6% monthlyand33to5A%yearly. The antibiotic suceptibility test was carried th a standaxdii single disc methods.
It was found that koth stains isola were sensitive to ampicillin, btiracin and eucillin.