Recombinant B87 and HLJ0504 VP2 Vaccines Protect Chickens Against Infectious Bursal Disease
Infectious bursal disease virus (IBDV) causes immunosuppression and bursal damage in chickens, and safer recombinant vaccines that provide durable protection are needed. This study compared the antigenicity, immunogenicity, protective efficacy, safety and antibody persistence of unpurified VP2 preparations and purified...