Serology of bovine parainfluenza virus type 3: comparison of the enzyme linked immunosorbent assay and hemagglutination inhibition.

An enzyme linked immunosorbent assay (ELISA) for the detection of antibody to bovine parainfluenza virus type 3 has been compared with the hemagglutination inhibition test on 130 field sera, and seven other paired sera showing a significant raise of titers. The ELISA was found to be four to 64 times more sensitive than the hemagglutination inhibition test and the two tests demonstrated a good correlation.