猪繁殖障碍与呼吸道综合征（PRRS）和猪圆环病毒2型（PCV-2）是近几年来严重危害猪群的两大免疫抑制性疾病。
Porcine reproductive and respiratory syndrome(PRRS) and porcine circovirus type 2(PCV-2) are two immunosuppressive diseases which are greatly endangering swine in recent years.
猪繁殖障碍与呼吸道综合征（PRRS）和猪圆环病毒2型（PCV-2）是近几年来严重危害猪群的两大免疫抑制性疾病。
Porcine reproductive and respiratory syndrome(PRRS) and porcine circovirus type 2(PCV-2) are two immunosuppressive diseases which are greatly endangering swine in recent years.
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