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CFRV 疫苗具有较好的稳定性。4℃保存8个月,其免疫保护力仍为83.6%,草鱼免疫后的血清中和抗体效价为119.2±8.8(2),与保存开始时相比,没有显著的差别。28℃保存8d,其免疫原性也基本上保持在原来的水平。CFRV 疫苗在此两温度下的免疫有效期分别为8个月和8d。不完全弗氏佐剂对 CFRV 疫苗有明显的增效作用;用 CFRV 疫苗对草鱼进行加强免疫,可明显地增强草鱼对该疫苗的免疫应答,由此证明草鱼具有免疫回忆反应。
CFRV vaccine has good stability. After 4 months of storage for 8 months, the immunoprotective power was still 83.6%. The serum neutralizing antibody titer after grass carp immunization was 119.2 ± 8.8 (2). There was no significant difference compared with that at the beginning of storage. 28 ℃ stored 8d, its immunogenicity is basically maintained at the original level. CFRV vaccine at these two temperatures of the immune validity of 8 months and 8d. Incomplete Freund’s adjuvant has a significant synergistic effect on CFRV vaccine; strengthening vaccination of grass carp with CFRV vaccine can significantly enhance the immune response of grass carp to the vaccine, which proves that grass carp has immune-recall reaction.