title: A modified enzyme-linked immunosorbent assay for the detection of avian pneumovirus antibodies.
abstract: Avian pneumovirus (APV) infection of turkeys in Minnesota was first confirmed in March 1997. Serum samples (n = 5,194) from 539 submissions to Minnesota Veterinary Diagnostic Laboratory were tested by a modified enzyme-linked immunosorbent assay (ELISA). Of these, 2,528 (48.7%) samples from 269 submissions were positive and 2,666 (51.3%) samples from 270 submissions were negative for APV antibodies. Most positive samples were from Kandiyohi, Stearns, Morrison, and Meeker counties in Minnesota. In addition, 10 samples from South Dakota were positive. The sensitivity and specificity of the ELISA test with anti-chicken and anti-turkey conjugates were compared by testing field and experimental sera. The ELISA test with anti-turkey conjugate was more sensitive than that with anti-chicken conjugate. The ELISA tests with antigens prepared with APV strains isolated from Colorado and Minnesota were also compared. No difference was detectable. Currently, the Minnesota Veterinary Diagnostic Laboratory uses an antigen prepared from the Colorado isolate of APV and a goat anti-turkey conjugate in the ELISA test.
authors.affiliation: Department of Veterinary Diagnostic Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul 55108, USA.
authors.forename: S
authors.initials: S
authors.lastname: Chiang
authors.forename: A M
authors.initials: AM
authors.lastname: Dar
authors.forename: S M
authors.initials: SM
authors.lastname: Goyal
authors.forename: M A
authors.initials: MA
authors.lastname: Sheikh
authors.forename: J C
authors.initials: JC
authors.lastname: Pedersen
authors.forename: B
authors.initials: B
authors.lastname: Panigrahy
authors.forename: D
authors.initials: D
authors.lastname: Senne
authors.forename: D A
authors.initials: DA
authors.lastname: Halvorson
authors.forename: K V
authors.initials: KV
authors.lastname: Nagaraja
authors.forename: V
authors.initials: V
authors.lastname: Kapur
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002645:Chickens; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods / Q000662:veterinary*; D018111:Pneumovirus / Q000276:immunology; D018186:Pneumovirus Infections / Q000175:diagnosis / Q000276:immunology / Q000662:veterinary*; D011201:Poultry Diseases / Q000175:diagnosis* / Q000276:immunology; D012680:Sensitivity and Specificity; D014422:Turkeys
chemical_list: D000914:Antibodies, Viral