Identification of porcine reproductive and respiratory...

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G01N 33/569 (2006.01) C07K 14/135 (2006.01)

Patent

CA 2744675

An enzyme-linked immunosorbent assay (ELISA) is based on the non-structural protein 7 (nsp7) of porcine repro-ductive and respiratory syndrome virus (PRRSV) and provides for the simultaneous detection and differentiation of serum anti-bodies directed against Type 1 (European) and Type 2 (North American) PRRSV. The invention provides a serological assay for the detection and/or differentiation of serum antibodies directed against Type 1 and/or Type 2 PRRSV utilizing PRRSV nsp7 as an antigen, and provides a diagnostic method for the detection of PRRSV infection, epidemiological surveys, and outbreak investigations. The invention may be used either alone or as a follow-up assay to determine the true status of unexpected positive re-sults that may occur using other assays, such as the IDEXX HERDCHEK PRRS ELISA.

Cette invention concerne un essai immuno-absorbant à liaison enzymatique (ELISA) qui est basé sur la protéine non structurelle 7 (nsp7) du virus du syndrome reproducteur et respiratoire porcin (PRRSV) et qui permet simultanément de détecter et de simuler des anticorps sériques de type 1 (européen) et de type 2 (nord-américain). L'invention concerne un dosage sérologique portant sur la détection et/ou la différentiation d'anticorps sériques dirigés contre un PRRSV de type 1 et/ou de type 2 utilisant la protéine nsp7 du PRRSV comme antigène, qui peut être utilisé comme méthode de diagnostic pour la détection d'une infection par le PRRSV, pour des enquêtes épidémiologiques et pour des investigations sur des épidémies. L'invention peut s'utiliser soit seule, soit come essai de suivi dans le but de déterminer l'état réel de résultats positifs inattendus pouvant apparaître lors d'autres essais, tels qu'IDEXX HERDCHEK PRRS ELISA.

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