不好意思，那个30天不是CDC的guidance，是英国NHS的guidance。准确地说是28天 You can have the vaccine 28 days after you had a positive test for COVID-19 or 28 days after your symptoms started, so you may need to wait https://www.ouh.nhs.uk/working-for-us/staff/covid-staff-faqs-vaccine.aspx
All vaccinated adults should get a Covid-19 booster shot because of the Omicron variant, CDC says https://www.cnn.com/2021/11/29/health/cdc-booster-guidance-omicron/index.html Pfizer set to request authorization for coronavirus booster for 16- and 17-year-olds https://www.washingtonpost.com/health/2021/11/29/covid-vaccine-16-17-year-olds/ UK to offer booster shots to all adults, just three months after their second dose https://edition.cnn.com/2021/11/29/uk/uk-booster-vaccine-expansion-omicron-gbr-intl/index.html 简直是疫苗大跃进。
All vaccinated adults should get a Covid-19 booster shot because of the Omicron variant, CDC says https://www.cnn.com/2021/11/29/health/cdc-booster-guidance-omicron/index.html Pfizer set to request authorization for coronavirus booster for 16- and 17-year-olds https://www.washingtonpost.com/health/2021/11/29/covid-vaccine-16-17-year-olds/ UK to offer booster shots to all adults, just three months after their second dose https://edition.cnn.com/2021/11/29/uk/uk-booster-vaccine-expansion-omicron-gbr-intl/index.html 简直是疫苗大跃进。 maiqi 发表于 2021-11-29 19:53
以色列两名医生，已经打了三针，仍然确诊Omicron。 Two Israeli doctors, both triple vaccinated, are confirmed with Omicron variant From CNN's Andrew Carey and Amir Tal in Jerusalem Two doctors working in Tel Aviv have been diagnosed with the Omicron variant, the Sheba Medical Center confirmed Tuesday, including the first known case of community spread of the variant in Israel. Both men had been vaccinated three times. According to the hospital, a doctor in his 50s tested positive several days after returning from a conference in London. The doctor's PCR tests before leaving Britain and on arrival back in Israel had produced negative results, so the man returned to work where he infected another doctor, a man in his 70s, the hospital says.
The pair are now resting at home with only very mild symptoms. All those who were in contact with the two men have been tested, with no positive results so far.
It brings the number of confirmed cases of the Omicron variant in Israel to four. The first case was discovered in a person returning from Malawi. Details of the second case have not been made public, but Israeli media reports say it was found in a person returning from South Africa.
美国至今仍然没有测序发现。 These countries and territories have confirmed Omicron infections: Australia Austria Belgium Botswana Canada Czech Republic Denmark Germany Hong Kong Israel Italy Japan Netherlands Portugal South Africa Spain Sweden United Kingdom
美国至今仍然没有测序发现。 These countries and territories have confirmed Omicron infections: Australia Austria Belgium Botswana Canada Czech Republic Denmark Germany Hong Kong Israel Italy Japan Netherlands Portugal South Africa Spain Sweden United Kingdom
以色列两名医生，已经打了三针，仍然确诊Omicron。 Two Israeli doctors, both triple vaccinated, are confirmed with Omicron variant From CNN's Andrew Carey and Amir Tal in Jerusalem Two doctors working in Tel Aviv have been diagnosed with the Omicron variant, the Sheba Medical Center confirmed Tuesday, including the first known case of community spread of the variant in Israel. Both men had been vaccinated three times. According to the hospital, a doctor in his 50s tested positive several days after returning from a conference in London. The doctor's PCR tests before leaving Britain and on arrival back in Israel had produced negative results, so the man returned to work where he infected another doctor, a man in his 70s, the hospital says.
The pair are now resting at home with only very mild symptoms. All those who were in contact with the two men have been tested, with no positive results so far.
It brings the number of confirmed cases of the Omicron variant in Israel to four. The first case was discovered in a person returning from Malawi. Details of the second case have not been made public, but Israeli media reports say it was found in a person returning from South Africa. meraviglia 发表于 2021-11-30 10:40
首先辉瑞药丸是治疗性质，不是预防的，这个药丸要和治疗艾滋病的药物一起服用，并且有不小的副作用。如果能上单抗，效果肯定比药丸好，还没有副作用。 再者辉瑞药丸的实际有效率是有症状3天内开始治疗能到89%，有症状5天内开始治疗是79%。对于现在流行的delta变种，3天内有症状并且可能发展成重症的比例有多少，大家都心里有数。 ”Pfizer’s 89 percent efficacy figure came from the group of volunteers who started treatment within three days of developing symptoms. Including people who began treatment on the fourth or fifth day, the pill reduced the risk of hospitalization or death by 85 percent.“ blackfriday9 发表于 2021-11-28 00:07
这我也不理解，在机场测一下很难吗？ 其实这比禁航更有效。 禁航惩罚南非做early detection， 以后人家就不愿意早测早报了。 加拿大就是这么查出来的 The health officials said their strategy is to stop as many omicron cases as possible from entering Canada. "We continue to urge the federal government to take the necessary steps to mandate point-of-arrival testing for all travellers irrespective of where they’re coming from to further protect against the spread of this new variant," the pair said. Ontario has focused rapid Covid-19 testing on travelers who have been to South Africa, Botswana, Lesotho, Eswatini, Mozambique, Namibia and Zimbabwe, the statement said.
这我也不理解，在机场测一下很难吗？ 其实这比禁航更有效。 禁航惩罚南非做early detection， 以后人家就不愿意早测早报了。 加拿大就是这么查出来的 The health officials said their strategy is to stop as many omicron cases as possible from entering Canada. "We continue to urge the federal government to take the necessary steps to mandate point-of-arrival testing for all travellers irrespective of where they’re coming from to further protect against the spread of this new variant," the pair said. Ontario has focused rapid Covid-19 testing on travelers who have been to South Africa, Botswana, Lesotho, Eswatini, Mozambique, Namibia and Zimbabwe, the statement said. surge 发表于 2021-11-30 12:19
推特上有人问 It boggles the mind. We allegedly set aside $1.15b for sequencing efforts on SARS2. Why did CDC or NIAID not fund a dozen regional sequencing centers nationwide? Or did they? Where's their output? 然后有人答 I had a handful of specimens skewing negative on a Spike and Membrane RT-PCR (positive on ORF1ab, assumed RdRp specific) that I couldn’t get sequenced until I got in contact with an academic coronavirus researcher. It’s absymal out there. 哎.. 那么大力气催人打针 花十分之一测一下序多好？
#COVID19 UPDATE: A total of 42,664 tests were conducted in the last 24hrs, with 4,373 new cases, which represents a 10.2% positivity rate. 之前荷兰航班10%的阳性率居然可以generally applicable to the S.A. population
#COVID19 UPDATE: A total of 42,664 tests were conducted in the last 24hrs, with 4,373 new cases, which represents a 10.2% positivity rate. 之前荷兰航班10%的阳性率居然可以generally applicable to the S.A. population CleverBeaver 发表于 2021-11-30 13:01
美国每周测序1万5到2万，但没有在机场测。说明美国现在仍然是Delta/Delta Plus，新变种Omicron 刚刚开始。 Currently, there are about 68 state and local public health laboratories sequencing for coronavirus variants as part of the US Centers for Disease Control and Prevention’s national strain surveillance network, Scott Becker, APHL''s chief executive officer, told reporters during a virtual news briefing Tuesday. These labs "are sequencing between 15,000 and 20,000 specimens per week. That number is four times greater than just a year ago. In November of 2021 alone, 190,000 specimens were sequenced by the entire public health system, which includes public health labs, CDC, and CDC-contracted labs," Becker said in the briefing.
美国每周测序1万5到2万，但没有在机场测。说明美国现在仍然是Delta/Delta Plus，新变种Omicron 刚刚开始。 Currently, there are about 68 state and local public health laboratories sequencing for coronavirus variants as part of the US Centers for Disease Control and Prevention’s national strain surveillance network, Scott Becker, APHL''s chief executive officer, told reporters during a virtual news briefing Tuesday. These labs "are sequencing between 15,000 and 20,000 specimens per week. That number is four times greater than just a year ago. In November of 2021 alone, 190,000 specimens were sequenced by the entire public health system, which includes public health labs, CDC, and CDC-contracted labs," Becker said in the briefing.
美国每周测序1万5到2万，但没有在机场测。说明美国现在仍然是Delta/Delta Plus，新变种Omicron 刚刚开始。 Currently, there are about 68 state and local public health laboratories sequencing for coronavirus variants as part of the US Centers for Disease Control and Prevention’s national strain surveillance network, Scott Becker, APHL''s chief executive officer, told reporters during a virtual news briefing Tuesday. These labs "are sequencing between 15,000 and 20,000 specimens per week. That number is four times greater than just a year ago. In November of 2021 alone, 190,000 specimens were sequenced by the entire public health system, which includes public health labs, CDC, and CDC-contracted labs," Becker said in the briefing.
总算是行动了，在四个大机场加强监测： Hartsfield-Jackson Atlanta International Airport -- John F. Kennedy International Airport -- Newark Liberty International Airport -- San Francisco International Airport https://www.cnn.com/travel/article/cdc-omicron-us-airports-surveillance/index.html
可是booster有用吗？
至少对Delta有用吧，目前美国99%是delta，咱们先熬过这一波再说。
那万一下个月omicron的改良版booster出来了，而现在刚打完booster的要等6个月啥的才能再打，不是反而危险了？防得了delta，防不了omicron
是啊，不明白
根据我多年之前做结核的经验，mutation越多越容易抗药，但是传染性and/or复制速度都下降很多，对于变种我一直都没有特别担忧
同问，以前delta也没这么紧张，不知道怎么回事
轮到正常人，最少需要六个月
现在辉瑞先是要两周来评估是不是现有疫苗有效，如果有需要，研制新疫苗，说是100天发货起运。先给高危人群，等到轮到你我估计也要6个月了，哪有什么下个月的好事。
看来根本挡不住感染，不过好在症状轻微。如果症状低的话让它把delta压住也不错
昨天听视频说她的病人缺氧之类的症状变少了，也没丧失味嗅觉，症状更普遍的是全身酸痛，可以再观望一下
下个月？别想了，疫苗公司都说了最快100天做出来，临床不可能完全不做吧，最不可能的速度三个月，正好六个月打下一针booster
没有检测到而已。我觉得没有已经有是大概率事件。
现在美国是抽查阳性样本的3.6%做基因测序，但是好像没有计划在机场检测，这个是个大问题
哈哈，我开玩笑的
我的确不懂， 机场检测， 尤其是对国际航班，也不是什么难事吧。 这个为什么不做？ 现在欧洲查出来的好几例都是机场查出来的。
tb是细菌 和新冠不一样 这个病毒的特点是 致病性和传染性是同时增加 omicron 有50个missense mutations
请教little_racoon自然感染的人应该等多久去打疫苗比较好？
omicron的missense mutation 有50个 三大蛋白 都彻底变异 booster 已经没有多少意义 如果做单抗immunohistochemistry 即使只有几个设计错误 或者 SNP 都有可能没有实验结果
CDC 的guidance是测试positive 30天后可以去打疫苗，不过个人认为可以等一等，等recover之后30天再去。不过你要是用了单抗治疗的话，必须等90天。
真这样那就是减毒疫苗了， 疫情就结束了
完整的delta基因库没有实验室提交 英国公布的数据是最多 其他国家都不提交或者分析 看看一下英国公布的新冠基因库 也隐藏了一部分 所以疫苗做不出来
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNTTGTAGATCTGTTCTCTAAACGAACTTTAAAATCTGTGTGGCTGTCACTCGGCTGCATGCTTAGTGCACTCACGCAGTATAATTAATAAC TAATTACTGTCGTTGACAGGACACGAGTAACTCGTCTATCTTCTGCAG。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 GCAGATGGGCTATATAAACGTTTTCGCTTTTCCGTTTACGATATATAGTCTACTCTTGTGCAGAATGAAT TCTCGTAACTACATAGCACAAGTAGATGTAGTTAACTTTAATCTCACATAGCAATCTTTAATCAGTGTGT AACATTAGGGAGGACTTGAAAGAGCCACCACATTTTCACCGAGGCCACTCGGAGTACGATCGAGTGTACA GTGAACAATGCTAGGGAGAGCTGCCTATATGGAAGAGCCCTAATGTGTAAAATTAATTTTAGTANNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
这个 症状轻微， 是对打过二针疫苗的人来说，delta 病毒说不定根本就不会感染。再说足球运动员 身体素质比普通人好的多的多。
说的是南非的病人, 不是足球运动员，但是这只是目前有限病例的判断
https://www.cnbc.com/2021/11/29/omicron-covid-variant-symptoms-heres-what-we-know-so-far.html
谢谢回复。 在cdc网站上没找到这个30天的建议，请问可以发个链接吗？谢谢。
Delta很diverse
看美帝股市并没有收到惊吓
其实对大多数人来说新冠病毒本身就是个不太吓人的attenuated vaccine
目前没说重症 只说轻微到中度
对的 如果现在是一个host上变出那么多变异的话 传回人群会稍微再adapt一下
不好意思，那个30天不是CDC的guidance，是英国NHS的guidance。准确地说是28天
You can have the vaccine 28 days after you had a positive test for COVID-19 or 28 days after your symptoms started, so you may need to wait
https://www.ouh.nhs.uk/working-for-us/staff/covid-staff-faqs-vaccine.aspx
请专家解释一下，1，2的原理？？为什么前两针一点不管用，第三针突然就管用了？对于同一个外源注入的MRNA, 为什么在第三针时人体能够产生不同的反应，对序列变异了的omicron开始免疫？到底什么东西只在第三次才能激发人体产生了新的免疫形式？
你列的第3条，我认为去掉疫苗，不要强行把疫苗加入人家的队伍滥竽充数比较好。我认为实际是自然感染病好的后的免疫效果远远大于任何mRNA的疫苗。
引伸出来的想法：打灭活疫苗效果，对防新病毒效果应当也远远好过任何形式的mRNA疫苗
我现在完全同意你的说法的
mRNA疫苗 按目前的设计 是个narrow and leaky vaccine
正因为不够broad 才容易搞出更多密集在spike的antigenic mutations 但是这个结果之下 cdc的建议居然可以是继续加打这个narrow and leaky vaccine
实在是没有话说了
从antibiotics的角度来看 几乎等同于 滥用了一个非广谱的抗生素 产生了有抗药性的细菌 但医生建议你继续吃原先吃过的抗生素
不交的原因是显然的，现在谁交谁就会被定义为SB : 谁象中国一样提交的武汉期间病毒序列，谁就是未来的target, 谁就是SB.
不打
最后的比喻太对了
Mark. Thanks.
All vaccinated adults should get a Covid-19 booster shot because of the Omicron variant, CDC says https://www.cnn.com/2021/11/29/health/cdc-booster-guidance-omicron/index.html
Pfizer set to request authorization for coronavirus booster for 16- and 17-year-olds https://www.washingtonpost.com/health/2021/11/29/covid-vaccine-16-17-year-olds/
UK to offer booster shots to all adults, just three months after their second dose https://edition.cnn.com/2021/11/29/uk/uk-booster-vaccine-expansion-omicron-gbr-intl/index.html
简直是疫苗大跃进。
大促销的感觉，和实验室报告相反的结论。实验室结果是目前疫苗有效性堪忧，结论是赶紧打完第三针，叹为观止
这个层主总结的好
是呀 这些人是不是从没考过gre的逻辑题
在将来会说前3针不管用，第4针就忽然管用了，lol 个人一直相信自然感染引起的免疫能力远超疫苗，就是上帝的杰作和几个自以为是的千老的差别~
有个东西叫somatic hypermutation，免疫系统识别抗原和你们码农训练神经网络是不一样的
自然感染和自然感染+疫苗的免疫反应并不一样。这个是有实战证据的，单纯自然感染以后的reinfection rate是感染+疫苗的十倍以上
灭活最大的问题是抗原不进入细胞，细胞外抗原的免疫反应和真实感染差别太大。这个问题现在有的新佐剂能扳回来不少，但是铝佐剂不行。还是那句话，疫苗训练免疫系统识别抗原和你们码农训练神经网络是两回事
平心而论，全程而言，台湾地区的做法人道而有效，别的地方可能仿效。
Two Israeli doctors, both triple vaccinated, are confirmed with Omicron variant From CNN's Andrew Carey and Amir Tal in Jerusalem
Two doctors working in Tel Aviv have been diagnosed with the Omicron variant, the Sheba Medical Center confirmed Tuesday, including the first known case of community spread of the variant in Israel. Both men had been vaccinated three times. According to the hospital, a doctor in his 50s tested positive several days after returning from a conference in London. The doctor's PCR tests before leaving Britain and on arrival back in Israel had produced negative results, so the man returned to work where he infected another doctor, a man in his 70s, the hospital says. It brings the number of confirmed cases of the Omicron variant in Israel to four. The first case was discovered in a person returning from Malawi. Details of the second case have not been made public, but Israeli media reports say it was found in a person returning from South Africa.
These countries and territories have confirmed Omicron infections:
Australia Austria Belgium Botswana Canada Czech Republic Denmark Germany Hong Kong Israel Italy Japan Netherlands Portugal South Africa Spain Sweden United Kingdom
这个也是很神奇的
以色列两名医生已经打了辉瑞疫苗第三针，依然被传染上，说明目前版本的疫苗根本防不住。
最厉害的是RBM部分，基本上就是另一个病毒了。我看今天Moderna CEO的意思，他们的213版本也不见得能顶得住
不是说omicron是从beta变过来的吗？怎么moderna也顶不住了
好像有人说这个是sas-cov-3或者covid-21
打，不会完全没用的，以后的事情又还不知道
中国的做法简单粗暴，就像减肥，管住口是最彻底的。 欧美老想着用科技来弥补防疫的不足，就像那些减肥“妙招”，什么蹬20个空中自行车能瘦腿啊，喝荷叶茶啊，吃听都没听说过的冷门粗粮啊。 用处不大，都是花架子，唉。。。
肯定不是beta演变来的，你看和其他已知测序的最近共同祖先都到了去年春天了，只是omicron上面有几个beta的特有突变。如果受体还是ACE2的话肯定不应该叫sars-cov-3，不过如果和所有已知变种的交叉中和能力都很差的话，确实可以算一个新的血清型了
要是体外实验发现213的中和滴度也没有很高（上千），就算一开始能减少一些感染，后面wane的也会很快，反正都是重做还不如直接做一个omicron的
请问教授
如果大家重做，mRNA，重组蛋白，和灭活／减活，考虑突变这么多，哪种疫苗从理论上会更有效？
反正做个新的也很简单，还不如重新做一个。
问题是都变成这样了，还打个毛的booster，病毒脑袋（RBD）都长得完全不一样了
必须赶紧促销啊，不然买了那么多booster，等下坐实了omicron无效，那白花花的钱哟。。。
都是high risk patient. 给健康人的trial 还在做，也未必做的出来。所以能不能吃上都是未知数
美国才不是能力差，是不测不报，测了也不报，遵循大自然规律。不提倡travelban，不影响经济金融市场。要不别的国家都有了变种，美国躺平的反而没有，怎么可能。
美国没有不测吧，现在测序基本上是阳性样品的3.6%,不算最多的，也不算少了，要知道，南非测序是0.8%。
我觉得是没有针对性的对南非过来的乘客测，虽然说美国民间有可能已经有了，肯定没有南非过来的人的比例大，这个我到现在还没有搞清楚为什么不做？强制乘客测试会有人权问题？
台湾新加坡香港都没有内地那么粗暴，疫情控制得都不错。台湾更一度是全世界的楷模（现在仍然是前列）。
中共把疫情控制给污名化了。本来一个正常的高大上医学防疫措施，中共硬是干成了政治草根运动。好比夫妻做爱，中共这帮渣男楞是搞成婚内强奸。
这我也不理解，在机场测一下很难吗？ 其实这比禁航更有效。 禁航惩罚南非做early detection， 以后人家就不愿意早测早报了。
加拿大就是这么查出来的
The health officials said their strategy is to stop as many omicron cases as possible from entering Canada. "We continue to urge the federal government to take the necessary steps to mandate point-of-arrival testing for all travellers irrespective of where they’re coming from to further protect against the spread of this new variant," the pair said. Ontario has focused rapid Covid-19 testing on travelers who have been to South Africa, Botswana, Lesotho, Eswatini, Mozambique, Namibia and Zimbabwe, the statement said.
是呀 估计一找吓一跳 索性不找了
美国有结界，就像当初的纽约一样，咳咳。
机场检测动静太大了，不限流的话，每个小时成百上千人进关，需要保持距离保持流量才能不塞堵，需要多少人去检测有多大空间保持社距，这些人测了不隔离等于没用，测了隔离等结果，谁掏钱？目前72小时内检测已经算是强制乘客检测了。针对南非几个国家检测的话，已经有人抱怨歧视非人性强制了，小孩子老人家等候太久多痛苦之类的。美国本来就有小一半人口认为是大号流感连疫苗都不打，私人拥枪，恐怕是最难强制的国家了吧。
再说确实歧视呀 假设大家都有 偏偏你只从南非来的里面找 那当然找出来的都是南非的咯
要找一起找呗
美国有72小时内检测的要求？ 这个我倒不知道。我家老人去年11月回美国的时候，根本就没有任何检测或自我隔离的要求，我们倒是自觉让他们在家呆了两周。
抵达后不测，登机前也不测？？不会吧
推特上有人问
It boggles the mind. We allegedly set aside $1.15b for sequencing efforts on SARS2. Why did CDC or NIAID not fund a dozen regional sequencing centers nationwide? Or did they? Where's their output?
然后有人答
I had a handful of specimens skewing negative on a Spike and Membrane RT-PCR (positive on ORF1ab, assumed RdRp specific) that I couldn’t get sequenced until I got in contact with an academic coronavirus researcher. It’s absymal out there.
哎.. 那么大力气催人打针 花十分之一测一下序多好？
之前荷兰航班10%的阳性率居然可以generally applicable to the S.A. population
的确，登机前也不测。我老爸那时候还特意登机之前两天去做了核酸检测，报告带着，结果上海浦东机场那里根本不查。到了美国这里就进来了，也没人说要他们在家隔离几天的说法。
。。。跟没新冠一样的平行世界，还强制疫苗干嘛，free country。。。
有住院和疫苗的分类了么？今早看到还在吵取消travelban呢，第二个医生报道说轻症了。
true
很多人都疲劳了
还不如就uk那种 herd immunity吧 也不错 本来natural immunity也不差
真的吗？论坛里前段时间不是说打的国药因为不是某特定两地生产的，结果拦着不让上飞机吗？
现在这么松了？！
难道不该是学习朝鲜等国的方法，啥时候比成绩都比第二名了吗
马上要学习墙国搞contact tracing了
你要往上翻，我说的是去年11月的情况。而且我父母有绿卡。
同问，就这次针对南非也没有要求72小时内检测啊？
其实不用在机场测，飞机快到的一个小时内就可以让大家捅鼻孔，收集样品，对应每一个人收集之后72小时内的联系电话，建议大家回家后隔离（不需要强制，绝大多数人还是听话的），有阳性及时通知。
11/8以前以后要求不一样，绿卡公民和签证持有人不一样。注意细节
孩子都生在厕所里了，因为封 ！
me too，
Currently, there are about 68 state and local public health laboratories sequencing for coronavirus variants as part of the US Centers for Disease Control and Prevention’s national strain surveillance network, Scott Becker, APHL''s chief executive officer, told reporters during a virtual news briefing Tuesday.
These labs "are sequencing between 15,000 and 20,000 specimens per week. That number is four times greater than just a year ago. In November of 2021 alone, 190,000 specimens were sequenced by the entire public health system, which includes public health labs, CDC, and CDC-contracted labs," Becker said in the briefing.
也有说10月份那波就是o 不知道真假 也不知道官媒会不会说点啥
其实如果10月那波就是o 到也没那么可怕 学校里都传过几次了
就像当初说delta来了 其实加州也是很早就有过了 我们这里口罩率高 杀伤力最吓人的还是最最早措不及防的原始strain
美国现在当然还是Delta变种为主。以每周15K-20K左右的测序，要是Omicron的人群比例稍微一高早就测出来。
至于那些热衷阴谋论的，说Omicron早在美国，10月那波就是O造成的， 只不过政府查出来不说， 听过笑笑就好。
荷兰官媒已经说了 在南非报以前荷兰境内就有o了
你要不再去试试自己的搜索能力？
Hartsfield-Jackson Atlanta International Airport -- John F. Kennedy International Airport -- Newark Liberty International Airport -- San Francisco International Airport
https://www.cnn.com/travel/article/cdc-omicron-us-airports-surveillance/index.html
有那么难理解吗？ 如果抗体对omicron的中和能力不如对delta的， 但是肯定不会掉到零，现在打个booster 可以让抗体水平增加，以量取胜。
当然对omicron最好的疫苗是omicron specific的。现在没有的情况下，把抗体水平搞很高也是权宜之计。
但是在以色列那个刚打过三针的医生被突破了的case面前，似乎显得weak了一点儿！