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作者:外围滚球app_外围买球足球网站更新时间:2020-10-20 21:54:12

国药集团中国生物总法律顾问周颂告诉中国之声记者,所谓灭活疫苗,简单说就是先把病毒毒株分离出来,就像选“种子”似的,得选一个好“种子”}#entText.video-lista,#endText.video-lista:visited{text-decoration:noneag真人app注册_ag真人客户端之后再进行繁殖培养,比如放大几十倍、几百倍等color:#fff然后再把这些活病毒杀死,使其失去感染性和复制力,但同时保留它刺激人体产生免疫应答的部分功能,最后经过纯化等工艺变成疫苗

}#endText.video-list.overlay{text-align:left而按照规范免疫程序接种两针新冠灭活疫苗后,28天摘掉口罩就不再是梦想了ag真人app注册_ag真人客户端padding:0px6px周颂:打疫苗多久能产生抗体,也跟免疫程序有关系background-color:#313131

新冠灭活疫苗一共需要接种两剂次,间隔2~4周,接种完第一剂以后,研究表明,7天开始普遍产生抗体,接种完第二剂28天以后,中和抗体阳转率或者叫阳性率均达百分百,也就是按照规范的免疫程序接种两剂疫苗28天后,所有人都产生足以抵抗新冠病毒的高滴度抗体font-size:12pxag真人app注册_ag真人客户端疫苗保护期,一到三年的可能性比较大width:120px那新冠疫苗又会给我们多久的防护呢?真的只有传言中的半年到一年吗?周颂表示,综合来看,一到三年的可能性比较大

position:absolute周颂:有几个不同的版本和说法ag真人app注册_ag真人客户端bottom:0px比如第一个版本和说法说,抗体在体内3~6个月就消失了height:26px

我们企业也对社会公开了,我们最早打疫苗的人叫“以身试药的180名先锋队”,最早打疫苗到现在已经五六个月的时间了,他们不断地抽血来监测它的抗体数值,目前看还处于抗体峰值的稳定期,没有下降,所以第一种说法不攻自破line-height:26pxag真人app注册_ag真人客户端第二种说法比较乐观,说有没有可能终身免疫呢?像小时候打过牛痘疫苗终身不得天花那样overflow:hidden现在看这种可能性也不太大

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