Efficacy of a modified-live virus vaccine administered to calves with maternal antibodies and challenged seven months later with a virulent bovine viral diarrhea type 2 virus. Bov. pract. [Internet]. 2008 Dec. 31 [cited 2024 Nov. 22];43(1):35-43. Available from: https://bovine-ojs-tamu.tdl.org/bovine/article/view/2733