Haralambiev H, Tsvetkov P, Nikolov A, Gaytandgieva R
Arch Exp Veterinarmed. 1975;29(5):701-4.
Calves vaccinated with the modified strain C24V react by creating neutralizing antibodies in high titres and are resistent to infection while non-immunized calves manifest the clinical symptoms of MD-BVD. Calves, vaccinated with the lapinized strain "K" of the SF virus react by creating neutralizing antibodies in low titres against the vius of MD-BVD and manifest no apparent clinical symptoms after challenge with the virulent strain MD-BVD.
用改良的C24V毒株接种的犊牛会产生高滴度的中和抗体，从而对感染具有抵抗力，而未免疫的犊牛则会出现MD - BVD的临床症状。用SF病毒的兔化“K”株接种的犊牛产生低滴度的针对MD - BVD病毒的中和抗体，在用强毒株MD - BVD攻击后未表现出明显的临床症状。
