For cattle with bovine viral diarrhea virus (BVDV), diarrhea isn’t the main problem. Less obvious signs can presage economically significant reproductive and respiratory problems. What’s more, persistently infected (PI) calves shed the virus, placing the rest of the herd at risk. In this podcast, Successful Farming editor Bill Spiegel interviews Dr. Chris Chase, a veterinary immunologist at South Dakota State University, about proactive strategies for managing BVDV.