鸭疫里默氏菌一个可能新型的鉴定

用玻片凝集试验、试管凝集试验和琼脂扩散沉淀试验，对13个鸭疫里默氏菌分离株进行了血清型鉴定。玻片凝集试验中，这些菌株只与8型抗血清发生强凝集反应，试管凝集试验中，其代表菌株C882与8型参考菌株之间仅存在单向低度交叉凝集反应，且与1～19型中的其他18个血清型参考菌株无可见的交叉凝集反应；用C882吸收可消除8型抗血清与C882等菌株之间的交叉凝集反应，但不影响8型抗血清的同源凝集反应和沉淀反应能力。琼扩试验中，C882与1～19型参考菌株之间不产生可见的交叉沉淀反应。沉淀反应模式表明，以C882为代表的13株细菌的热稳定抗原具有同一性。结果表明，13株待检菌株可能属于一个新的血清型。

A potential new serotype of Riemerella anatipestifer isolated from ducks in China

Thirteen strains of Riemerella anatipestifer isolated from ducks in China were serotyped by slide ag-glutination test,tube agglutination test and agar gel precipitation test.Although these isolates strongly agglutinated in antiserum to serotype 8 in slide agglutination tests,their representative strain C882 only produced one-way low-grade cross-reactions with serotype 8 representative strain and showed no cross agglutination titers with other 18 type strains ofserotypes 1-19 in tube agglutination tests.Adsorption with strain C882 removed the cross reactions between antiserum to serotype 8 and isolates represented by C882,while did not affect the homologous agglutination and precipitation properties of antiserum to serotype 8.In addition,C882 didn't produce any precipitation reactions with serotype 1-19.Based on the precipitation patterns with antiserum to C882,the 13 isolates were found to be serologicallyidentical.The results indicated that these isolates maybe a potential newserotype.