Evolution analysis indicated the isolate YB was in far relation to avian reovirus strains(chicken reovirus strains),and nucleotide homogeneity of S4 between isolate YB in China and muscovy duck reovirus strains in France(DRV-89330) was 93.3? %.

• 分子进化系统分析表明该毒株与禽呼肠孤病毒(鸡呼肠孤病毒)的亲缘关系较远；DRV-YB与DRV-89330同缘率为93.；3%25。