AUTHOR=Liu Qi , Nie Jiangjiang , Hu Ying , Zeng Qinghua , Wang Ke , Wu Xiangdong , Chen Zheng , Xie Huali , Wu Huansheng TITLE=Characterization and pathogenicity of very virulent IBDV JOURNAL=Frontiers in Veterinary Science VOLUME=Volume 12 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1670204 DOI=10.3389/fvets.2025.1670204 ISSN=2297-1769