... chng ri lon hụ hp v sinh sn 69 1. đặt vấn đề Hội chứng r i loạn hô hấp v sinh sản hay còn gọi l bệnh tai xanh (Porcine Reproductive and Respiratory Syndrome - PRRS) đà v đang gây ra những ... with porcine reproductive and respiratory syndrome virus (PRRSV). It was found that clinical signs of PRRS in infected sows included anorexia, high fever, dyspnea, blue ears and abortion or stillbirth. ... Porcine reproductive and respiratory syndrome (PRRS). A review, with emphasis on pathological, virological and diagnostic aspects. Br. Vet. J., 152, p. 153174. Forsberg R. , T. Storgaard,...