IBR is an infectious viral disease of cattle caused by Bovine Herpes Virus 1 (BHV-1). IBR stands for Infectious Bovine Rhinotracheitis and is the most common clinical manifestation associated with BHV-1 infection.
The severity of disease associated with IBR infections can range from the very mild/inapparent to the very severe. Inflammation of the nostrils and upper airways of cattle, associated with a high temperture are the most common IBR clinical signs. The virus can also cause abortion in pregnant cattle as well as pharygitis in young calves.