[Advances in Understanding of the Infection/Replication Mechanisms and Virulence Determinants of the Porcine Reproductive and Respiratory Syndrome Virus].

The porcine reproductive and respiratory syndrome virus (PRRSV) can cause reproductive barriers in breeding pigs and respiratory symptoms in piglets. In this review, we summarize research progress of the infection and replication mechanisms of the PRRSV. We also review the virulence determinants of the PRRSV. All these fundamental studies are important for the control and elimination of the PRRSV.