title: Selection of European Union standard reference sera for use in the serological diagnosis of infectious bovine rhinotracheitis.
abstract: A study, consisting of three trials, was undertaken in order to find standard reference sera for use in serological diagnostic procedures for infectious bovine rhinotracheitis (IBR) in the European Union (EU). A total of forty-nine laboratories participated in the trials, in which panels of positive, weak positive, and negative candidate sera were tested blind by neutralisation, indirect and blocking enzyme-linked immunosorbent assay, indirect immunofluorescence and passive haemagglutination. A serum which scored positive in all tests in all laboratories was selected as a strong positive standard serum. The chosen negative standard serum gave negative results in virtually all tests. A 1/36 dilution of a positive serum was chosen as the weak positive standard serum and only very sensitive techniques were able to score it positive. Three EU reference sera are now available for the standardisation of serological tests for IBR.
authors.affiliation: Centre National d'Etudes Vétérinaires et Alimentaires-Laboratoire de Pathologie Bovine, Lyons, France.
authors.forename: B
authors.initials: B
authors.lastname: Perrin
authors.forename: T
authors.initials: T
authors.lastname: Calvo
authors.forename: P
authors.initials: P
authors.lastname: Cordioli
authors.forename: M
authors.initials: M
authors.lastname: Coudert
authors.forename: S
authors.initials: S
authors.lastname: Edwards
authors.forename: M
authors.initials: M
authors.lastname: Eloit
authors.forename: B
authors.initials: B
authors.lastname: Guérin
authors.forename: J A
authors.initials: JA
authors.lastname: Kramps
authors.forename: P
authors.initials: P
authors.lastname: Lenihan
authors.forename: E
authors.initials: E
authors.lastname: Paschaleri
mesh_terms: D000818:Animals; D002417:Cattle; D004797:Enzyme-Linked Immunosorbent Assay / Q000592:standards / Q000662:veterinary; D005062:European Union; D005455:Fluorescent Antibody Technique / Q000592:standards / Q000662:veterinary; D006386:Hemagglutination Tests / Q000592:standards / Q000662:veterinary; D007242:Herpesvirus 1, Bovine / Q000276:immunology*; D007106:Immune Sera; D007241:Infectious Bovine Rhinotracheitis / Q000175:diagnosis*; D007315:Insemination, Artificial / Q000592:standards / Q000662:veterinary; D008297:Male; D009500:Neutralization Tests / Q000592:standards / Q000662:veterinary; D012015:Reference Standards
chemical_list: D007106:Immune Sera