Porcine parvovirus (PPV) and pseudorabies virus (PRV) are two important etiological agents causing swine reproductive failures,which occurr in high prevalence and cause great morbidity in infected swine, leading to great economic losses to swine industry.

• 猪细小病毒(PPV)与伪狂犬病毒(PRV)是引起猪繁殖障碍的两个主要病原。