我国首例小反刍兽疫诊断报告

2007年7月我国西藏发生不明山羊疫情,国家外来动物病诊断中心对当地动物疫病控制中心送检的14只病死山羊病料和一批血清样品分别进行病原学和血清学检测。利用较敏感的小反刍兽疫病毒(PPRV)特异性荧光定量RT-PCR方法,在11只病羊组织中检测到小反刍兽疫病毒核酸。利用次敏感的PPRV普通RT-PCR方法,从8只病羊组织中检测到PPRV核酸。针对1号样本病原核酸N基因和F基因片段进行遗传发生分析,该病原属于4系。利用竞争ELISA试剂盒对送检的13份血清样本进行抗体检测,结果全部阳性。将1号组织样本接种Vero细胞分离病毒,透射电镜观察下,发现了500纳米左右的病毒粒子。对分离毒株进行PCR检测同样证实其为PPRV。

Diagnosis of the First Outbreak of Peste des Petits Ruminants in Tibet

The first outbreak of peste des petits ruminants in ovine in Tibet was confirmed by multiple laboratory tests including one step real-time RT-PCR, conventional RT-PCR, competitive ELISA and virus isolation. The presence of PPRV was detected in 11 out of 13 field samples by one step real-time RT-PCR, among which 8 were further detected by conventional RT-PCR. Sequence analysis showed that the virus fell into the lineage 4 which was epidemic in Middle East and certain western Asian countries. One strain of PPRV was isolated in Vero cell lines from field samples and confirmed by RT-PCR test.