infectious bursal disease (ibd), a highly contagious and devastating disease in young chicken, is causedby infectious bursal disease virus (ibdv). to improve the immunogenicity of recombinant ibdv subunitvaccine, an attempt was made to find a new way to prepare ibd vaccine containing glycosylated mvp2antigen. firstly, ibdv mvp2 gene (with a nucleic acid sequence encoding b cell epitope of ibdv(...