In February 1985, a 2-year-old bull with inappetence and weight loss of 1-week duration was examined by the field services staff of the Iowa State University College of Veterinary Medicine. The bull had a normal rectal temperature, decreased rumen activity, and loose feces and walked with a stiff gait. The hemogram was normal for hemoglobin concentration, PCV, and total plasma protein concentration, but the bull had a leukopenia which was primarily attributable to an absolute lymphopenia. Treatment consisted of antimicrobial drugs, an antidiarrheal medication, and a nonsteroidal anti-inflammatory and analgesic drug. After 3 weeks without improvement, the bull was admitted to the Iowa State University Large Animal Hospital.This article is published as Bolin, S.R., J.A. Roth, E.K. Uhlenhopp, and J.F. Pohlenz. 1987. Immunologic and virologic findings from a case of chronic bovine viral diarrhea. J Am Vet Med Assoc, 190:1015-1017. </p
