Figure 1.

Results of bovine viral diarrhea virus (BVDV) testing performed on samples collected on arrival of animals at the feedlot in a study to investigate the effect of BVDV infections on the overall health and performance of feedlot cattle.

^a PI — persistently infected with BVDV

^b Evidence for a PI infection with BVDV was established when BVDV was detected by polymerase chain reaction (PCR) and immunohistochemical (IHC) staining on samples obtained at entry to the feedlot

^c Evidence for an acute infection with BVDV was established when BVDV was detected by PCR testing but was not present at detectable levels by IHC staining of the skin biopsy