Cattle herds where an animal has tested positive for bovine viral diarrhoea (BVD) virus saw their BVD status change from not-negative to positive on Monday (April 10).
This positive status only applies to holdings where there is evidence of a live persistently infected (PI) animal in the herd.
Once the PI has been removed from the holding, or the animal has been re-tested, allowing the presence of the virus to be ruled out, the BVD herd status will revert to not-negative.