PMID- 12968750 OWN - NLM STAT- MEDLINE DCOM- 20030923 LR - 20190522 IS - 1040-6387 (Print) IS - 1040-6387 (Linking) VI - 11 IP - 5 DP - 1999 Sep TI - Characterization of antibody response to porcine reproductive and respiratory syndrome virus ORF5 product following infection and evaluation of its diagnostic use in pigs. PG - 391-5 AB - The sensitivity and specificity of recombinant open reading frame 5 products used in the Western blotting assay for confirmation of porcine reproductive and respiratory syndrome virus (PRRSV) serologic status were evaluated. The recombinant antigen-based assays were specifically compared with a commercial enzyme-linked immunosorbent assay (ELISA) for PRRSV antibodies using 1) PRRSV antibody-negative reference sera (n = 30), 2) naturally infected pig sera (n = 40), 3) sequential sera obtained from 24 experimentally infected pigs, and 4) sera submitted to 3 state diagnostic laboratories (n = 200). The recombinant antigen assay yielded an average increased sensitivity of 10% over the commercial PRRSV ELISA. The negative controls (group 1 sera) showed no difference between the 2 assays. This comparison confirmed that the recombinant antigen-specific assay was more sensitive than the commercial ELISA and is well suited for routine confirmation of the presence of PRRSV antibodies. FAU - Kwang, J AU - Kwang J AD - USDA/ARS, Meat Animal Research Center, Clay Center, NE 68933, USA. FAU - Yang, S AU - Yang S FAU - Osorio, F A AU - Osorio FA FAU - Christian, S AU - Christian S FAU - Wheeler, J G AU - Wheeler JG FAU - Lager, K M AU - Lager KM FAU - Low, S AU - Low S FAU - Chang, L AU - Chang L FAU - Doster, A R AU - Doster AR FAU - White, A AU - White A FAU - Wu, C C AU - Wu CC LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PL - United States TA - J Vet Diagn Invest JT - Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc JID - 9011490 SB - IM MH - Animals MH - Antibody Formation MH - Blotting, Western/*veterinary MH - Enzyme-Linked Immunosorbent Assay/*veterinary MH - Observer Variation MH - Porcine Reproductive and Respiratory Syndrome/*diagnosis/immunology MH - Porcine respiratory and reproductive syndrome virus/*immunology/pathogenicity MH - Reproducibility of Results MH - Sensitivity and Specificity MH - Swine EDAT- 2003/09/13 05:00 MHDA- 2003/09/25 05:00 CRDT- 2003/09/13 05:00 PHST- 2003/09/13 05:00 [pubmed] PHST- 2003/09/25 05:00 [medline] PHST- 2003/09/13 05:00 [entrez] AID - 10.1177/104063879901100501 [doi] PST - ppublish SO - J Vet Diagn Invest. 1999 Sep;11(5):391-5. doi: 10.1177/104063879901100501.