title: Vaccination against infectious bovine rhinotracheitis may hamper export trade in breeding cattle.
mesh_terms: D000818:Animals; D001947:Breeding; D002170:Canada; D002417:Cattle; D002418:Cattle Diseases / Q000517:prevention & control*; D003132:Commerce; D005260:Female; D007242:Herpesvirus 1, Bovine / Q000276:immunology; D007241:Infectious Bovine Rhinotracheitis / Q000276:immunology / Q000517:prevention & control*; D008297:Male; D014611:Vaccination / Q000662:veterinary*