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结合病毒分离鉴定确诊为PRRS病毒（PRRSV）感染，RT PCR试验证实分离毒属美洲型PRRSV ，且与ATCC VR2 332株属同一基因亚型。
RT PCR test proved that the isolate belongs to serotype of American PRRSV and shares the same subgenotype with ATCC VR2332.
一旦鉴定并分离出具有大流行可能的流感病毒新毒株，大约需要5至6个月时间提供首批获批准的疫苗。
It takes approximately five to six months for the first supplies of approved vaccine to become available once a new strain of influenza virus with pandemic potential is identified and isolated.
目的副流感病毒的分离、鉴定。
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