死亡率:猴痘的死亡率平均为10%,其中尤以儿童感染者的死亡率最高。 3、牛痘 牛痘(cowpox)是由牛痘病毒所致的一种传染性疾病,在牛群中流行,亦可传染给人,多发生于与牛相关的饲养场、屠宰场工人。
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N a contagious viral disease of cows characterized by vesicles on the skin, esp on the teats and udder. Inoculation of humans with this virus provides temporary immunity to smallpox. It can be transmitted to other species, esp cats 牛痘
One day a girl came to see him who had a cowpox sore on her hand.
一天一个女孩儿来看他,女孩儿手上有个牛痘疮。
Unlike Jenner's later vaccination, which used cowpox, variolation used a small measure of smallpox itself.
接种人痘,是直接使用小量的天花,和金纳后来用牛痘接种不同。
Jenner Edward, an Enligh doctor improved the vaccination to cowpox vaccination, and accomplished the second leap of vaccination.
在医生琴纳的研究下把人痘术改进成牛痘术,实现了种痘术的第二次飞跃。
But unlike the Cowpox virus, vaccinea, that we talked about before, this is the real disease causing agent.
但是同我们之前曾讨论过的,牛痘病毒疫苗的不同之处在于,这是可以直接致病的病毒
And he produced a fluid from cowpox lesions, so these were these lesions, these skin lesions on cows.
他生产出一种取自牛痘,即牛皮肤上的瘢痕的液体
But variola, which causes smallpox in humans, and vaccinia, which causes a disease called cowpox in cattle, turned out to be, we now know, viruses that are molecularly very similar.
但是导致天花的人痘病毒,和导致牛痘,的牛痘病毒,后来发现其实是,我们现在知道,这两种病毒在分子水平上十分相似
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