S. Waxweiler et al., 5 YEARS DETECTION OF YOUNG BULLS PERSISTENTLY INFECTED WITH BOVINE VIRAL DIARRHEA VIRUS (BVDV) IN SELECTION STATION OF CINEY (BELGIUM), Annales de medecine veterinaire, 136(1), 1992, pp. 57-60
Since 1987, blood was regularly collected from young bulls gathered in
a selection station of Belgian Blue Breed, in order to identify cattl
e persistently infected with Bovine Viral Diarrhoea Virus (BVDV). Perc
entages of persistently infected animals were similar to those usually
observed in bovine populations and remained identical through the dif
ferent years. Some samples were analyzed by virus isolation in cell cu
lture, the reference test, and by ELISA; results obtained by both assa
ys were perfectly similar.