title: [Serological diagnosis of IBR. Comparative studies of cattle sera in the virus neurtalization and passive hemagglutination reactions].
abstract: Three hundred eighty six cattle serums were simultaneously investigated by virus neutralizing (VN) and passive hemagglutination (PSH) reactions. Results obtained by the two methods coincided in 94% of the sermums studied and all serums with VN antibodies had also antibodies which can be established by the PSH reaction. About 6% of the positive reagents for PSH reaction were negative for the VN reaction. These were serums containing early antibodies (IgM) or low-titer antibodies of the IgG class, and were subtreshold for the VN reaction. The antibody titers determined by the PSH reaction were 7 to 10 times higher than these determined by the VN reaction, while their mean titer in serums with minimum VN index 1.0 was 1:23. The conclusion is drawn that PSH can be used as an independent serological test.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002417:Cattle; D006386:Hemagglutination Tests; D007242:Herpesvirus 1, Bovine / Q000276:immunology*; D007241:Infectious Bovine Rhinotracheitis / Q000175:diagnosis*; D009500:Neutralization Tests; D012698:Serologic Tests / Q000662:veterinary
chemical_list: D000914:Antibodies, Viral
vernacular_title: Serologichna diagnostika na IBR. Sravnitelni izsledvaniia na serumi ot goveda s reaktsii virus-neutralizatsiia i pasivna khemaglutinatsiia.