Variant first seen in South African has multiple mutations in its spike protein used to infect human cells U.K. scientists expressed concern on Monday that COVID-19 vaccines being rolled out in Britain may not be able to protect against a new variant of the coronavirus that emerged in South Africa and has spread internationally. Both Britain and South Africa have detected new, more transmissible variants of the COVID-19-causing virus in recent weeks that have driven a surge in cases. British Health Secretary Matt Hancock said on Monday he was now very worried about the variant identified in South Africa. Simon Clarke, an associate professor in cellular microbiology at the University of Reading, said that while both variants had some new features in common, the one found in South Africa "has a number additional mutations … which are concerning." He said these included more extensive alterations to a key part of the virus known as the spike protein — which the virus uses to infect human cells — and "may make the virus less susceptible to the immune response triggered by the vaccines." Lawrence Young, a virologist and professor of molecular oncology at Warwick University, also noted that the variant detected in South Africa has "multiple spike mutations." "The accumulation of more spike mutations in the South African variant are more of a concern and could lead to some escape from immune protection," he said. Canadians should get same COVID-19 vaccine for both doses — except in 'extremely unlikely' casesGrowing 'consensus' provinces should offer COVID-19 vaccine more widely, instead of holding back 2nd dose Scientists including BioNTech CEO Ugur Sahin and John Bell, Regius Professor of Medicine at the University of Oxford, have said they are testing the vaccines against the new variants and say they could make any required tweaks in around six weeks. Greater concentration of virus particles with variants Public Health England said there was currently no evidence to suggest COVID-19 vaccines would not protect against the mutated virus variants. Britain's health ministry did not immediately respond to requests for comment. The world's richest countries have started vaccinating their populations to safeguard against a disease that has killed 1.8 million people and crushed the global economy. There are currently 60 vaccine candidates in trials, including those already being rolled out from AstraZeneca and Oxford, Pfizer-BioNTech, Moderna, Russia's Sputnik V and China's Sinopharm.
Scientists say both the variants from South Africa and the U.K. are associated with a higher viral load, meaning a greater concentration of virus particles in patients' bodies, possibly contributing to increased transmission. Oxford's Bell, who advises the U.K. government's vaccine task force, said on Sunday he thought vaccines would work on the variant from the U.K., but said there was a "big question mark" as to whether they would work on the variant from South Africa. BioNTech's Sahin told Germany's Der Spiegel in an interview published on Friday that their vaccine, which uses messenger RNA to instruct the human immune system to fight the virus, should be able to protect against the variant found in the U.K. "We are testing whether our vaccine can also neutralize this variant and will soon know more," he said.
感染早期能够住院的老年人最适合上单抗。因为单抗的注射条件就是住院+早期+高危人群。不住院没法监控,不早期单抗无用,不高危人群就是滥用。单抗现在其实有点供过于求,注射型药物局限还是很大的,远不如口服药物适合普及。
唉,想起来真是。
我家离机场15分钟,10个小时飞回国出了机场20分钟到家。以前真的觉得天涯若比邻。没想到一场瘟疫干净利落的就通途变天堑了。
我认识一些搞过敏和哮喘的,他们都认为即使有疫苗,也要三到五年, 成熟的疫苗,至少18个月到5年,总之,没那么快。
啊,是的
我19年回了两次国,后悔没多待几天
yeah 冒进是有风险的
还有这楼里讲uk打的疫苗不好,他们打的到底是啥疫苗?我都晕了
说实话,如果病毒能变异到对抗疫苗那就一定会变异。美国的病例多很大程度上是测试能力强,印度巴西和广大发展中国家一定有更多病例,即使美欧能快速普及疫苗,变异也会在这些发展中国家发生。
请问,5%是从哪里来的?
是呀,其实人类这么努力防疫也只是因为现代人类文明还不想承受损失2-5%人口的代价。并不是人类承受不起这种代价。人类历史上短时间,几年或者几十年内损失5%,10%甚至一半人口的例子很多,人类依然繁衍至今。最近的一战西班牙流感和二战,人类都损失了差不多5%的人口。等所有努力宣告无效,人类就会接受损失5%的人口,继续前进。
不是所有努力无效而是压根不想努力吧
今后,人类可能需要像接种流感疫苗一样,每年接种一次COVID疫苗。家里的猫和狗也需要接种疫苗。
听着好绝望,这个病毒刚出来媒体就说人类的生活方式要被改变了,不会余生都这样了吧
我担心美国,现在疫苗打得好慢,WSJ在批评各州组织不力
得了新冠很多人跟做月子那么久,哪受的了
这就是让各个国家关门过日子的病毒
如果过一段时间疫苗没看出有什么副作用,还会有更多人打
谁都希望病毒没有出现,接受现实吧,一时半会回不到从前,即使国内
国内的黑朋友只多不少
每年都得流感还不打疫苗....那我建议你还是打一次吧,打了以后你就知道疫苗的好处了。感冒我可能一两年会得一次,基本睡一夜或两天就好。我只得过一次流感,在床上躺了两周。两个病不是一个数量级。
病毒是实验室造的,你党宣传部门说是美国搞的
既然是实验室造的,当然是想怎么变异就怎么变异
张文宏某次也说了死亡率掉到1%一下就可以开放,像流感疫苗一样年年打,有变异就调整疫苗。但是没必要全球全国封锁了。
而且同期测量,药物开发也会跟上吧,不会一直只能靠人硬扛。希望初期可以在家自测,有问题就自我隔离。还有口罩没准也能进化成喷雾状,能管个两三小时也就差不多了,进门前自己喷几下就好。
我是理解不了你的逻辑
首先你说这讨论是为打击腺病毒疫苗,我回说美国就没有这疫苗有啥好打击的,你就转移说国内疫苗来不了,请问你这回答和我说的有毛逻辑关系啊。我根本就没有关心国内疫苗的意思,你的意思,因为国内灭活疫苗来不了所有大家才打击腺病毒疫苗?
这个不就是灭活疫苗的效果嘛。中国只能永远对外封锁,不然就是在养蛊
不是 她是真的这么以为的 后来我想了想 可能是外地的外国人去北京旅游的 现在只有工作签才能去国内
现在回不去了,在本地找了家中学教书。他说还是想回去的,武汉的那家国际 学校也很急,可中国现在不让进。应该是级别不够重要吧,他的国际学校替他争取不到回去教书的签证。
戴着口罩看不到脸 咋成为亲家呢
关键是打疫苗搞不好也是接触感染源的大好机会 我每次打流感疫苗都要感冒
不戴口罩真的是对整个进程的影响是很不好的
最新新闻,英国科学家担心疫苗对南非变种失效
病毒不是天然的
要想消灭病毒,关键就是病毒哪里来的
病毒长期与人共存,唯一的原因就是不知道病毒是哪里来的
道理简单啊,你以为天下无毒了,人家说放毒就放毒
2003年的SARS,现在在自然界中根本不存在了
这次的病毒是SARS 二代,E蛋白S蛋白基本上是一样的
真的觉得特别生气,石正丽们全国的深山老林里到处搜集蝙蝠粪便
中国更是各地到处新建病毒研究所,四处搜刮动物的病毒
当然中国自己是没啥技术,美国那帮利欲熏心的人又帮着干了什么
真的觉的很生气,这次是死亡率不高
但是这一次不搞清楚,下一次来个死亡率高的怎么办
来个真正的空气传染的艾滋病怎么办
说的好像你知道病毒怎么来的就能消灭病毒一样
恰恰相反,如果这个世界性流通不可避免,那么中国也要go through一遍相同的措施,除非彻底闭关锁国。 在这种情况下甚至可以说欧美有了某种程度的先发优势。。。
中国现在也没有彻底闭关锁国吧,一有案例就追踪,目前至少控制的还可以,没有大规模爆发,只要不是全面开花,非疫区至少能过正常日子
你莫不是在说反话?还先发优势,美国版新闻联播?
病毒是变弱了
当时有个对照组 摩萨阿群岛 分成两个政府
然后一边就是没封锁 西班牙流感死了大量人口 一边封锁了 直到大流行结束才打开 没死人
所以可以得出结论是病毒变弱了 而不是群免
make sense! 可能就是这样
应当不至于吧。后面有疫苗,我想可能的伤害应当还是比较小吧。
不要太灰心,很多公司还在研发广谱治疗药物,口服的。前阵子默沙东不是有个药据说希望很大吗。保持乐观。
听完你说的更悲观了……
没那么久吧,印象中说只能扛几个月。。。
知道哪里来的,当然可以消灭病毒
单抗可以完全中和人体的病毒
可是再好用的药,你架不住有人一直投毒、投变异的病毒
说实在的,这次的新冠病毒是超越艾滋、超越埃博拉的大事件
因为中共将成为倒霉鬼和替罪羊
这就是为啥中共抵死不承认、甩锅美国、拼命的给中国老百姓洗脑是美国干的
可是你不敢甩到真正的幕后黑手上,幕后的暗势力盖了实验室,给了技术和钱
中共就是过去的晚清,中国人自己只有恨铁不成钢
一群不成器的贪蠢的饭桶给中国人往沟里带吧
记得隐隐约约看过说9个月。现在开始打了,希望有更多数据