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为了解森林脑炎疫源地的分布变化趋势及样本分离病毒的特性,采集了森林脑炎高发区周边的森林全沟硬蜱、血蜱样本及森林脑炎患者的脑组织样本,用小白鼠脑内接种法检测、分离病毒。分离的病毒经鉴别试验证明为森林脑炎病毒;蜱、脑两种标本检测的阳性率分别为50%和100%。结果表明森林脑炎的疫区有从林区向农业区扩散的趋势,且全沟硬蜱的带毒率较高;森脑患者的脑组织样本与蜱标本病毒的性状有差异。
In order to understand the trend of the distribution of forest encephalitis and the characteristics of the virus isolated from samples, brain samples of Ixodes nurii, blood-borne ticks and forest encephalitis around forest encephalitis-prone areas were collected. Inoculation test, virus isolation. The isolated virus was proved to be a forest encephalitis virus by a differential test. The positive rates of ticks and brains were 50% and 100% respectively. The results showed that the epidemic area of forest encephalitis tended to spread from the forest area to the agricultural area, and the tick-borne Ixodes had a high rate of virulence. The brain tissue samples of the brain-derived brain samples differed from the tick-borne virus.