The animal regression test also verified that the two virus isolations were BVDV.

动物回归试验进一步证实了所分离的两株病毒均为BVDV。

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BVDV infection has resulted in a significant loss in the livestock industry all over the world, especially in USA and New Zealand.

目前该病毒在世界范围内广泛分布，特别是美国、新西兰等养牛业发达的国家。

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BVDV infection has resulted in a significant loss in the livestock industry all over the world, especially in USA and New Zealand.

目前该病毒在世界范围内广泛分布，特别是美国、新西兰等养牛业发达的国家。

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