Case Study: Removal of Bovine Viral Diarrhea Virus (BVDV) Persistently Infected (PI) Animals from a United States Beef Herd: Effect on PI Animal Prevalence and BVDV Seroprevalence. Case Study. Bov. pract. 2004, 38 (2), 155-160. https://doi.org/10.21423/bovine-vol38no2p155-160.