Detection of antibodies against porcine epidemic diarrhea virus in serum and colostrum by indirect ELISA

An indirect porcine epidemic diarrhea virus (PEDV) anti-immunoglobulin (Ig) G ELISA based on the S1 portion of the spike protein was validated and compared with an indirect immunofluorescence assay. In serum samples from experimentally infected pigs (n = 35), anti-IgG PEDV antibodies were detected a...

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Detalles Bibliográficos
Autores principales: Gerber, Priscilla F., Gong, Qiaoling, Huang, Yao-Wei, Wang, Chong, Holtkamp, Derald, Opriessnig, Tanja
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Ltd. 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7110509/
https://www.ncbi.nlm.nih.gov/pubmed/25135339
http://dx.doi.org/10.1016/j.tvjl.2014.07.018
Descripción
Sumario:An indirect porcine epidemic diarrhea virus (PEDV) anti-immunoglobulin (Ig) G ELISA based on the S1 portion of the spike protein was validated and compared with an indirect immunofluorescence assay. In serum samples from experimentally infected pigs (n = 35), anti-IgG PEDV antibodies were detected as early as 7 days post-infection. In field serum samples (n = 239), the diagnostic sensitivity of the S1 ELISA was 100% and the diagnostic specificity was 94%. The S1 ELISA showed no cross-reactivity with antibodies against other porcine coronaviruses. Colostrum samples (n = 133) were also tested for anti-PEDV IgG and IgA. The diagnostic sensitivity was 92% for IgG and 100% for IgA, and the diagnostic specificity was 90% for IgG and 99.4% for IgA. These data suggest that the S1 ELISA is a sensitive and specific test that could also be used to evaluate PEDV colostral immunity.

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