AstraZeneca的疫苗被n个EU国家停止了,打完可能成为脑血栓吴老二。

1 hr 1 min ago

Europe has nearly 8 million unused AstraZeneca doses​

From CNN’s James Frater

A vial of AstraZeneca Covid-19 vaccine is handled on March 15 in Dippoldiswalde, Germany.
A vial of AstraZeneca Covid-19 vaccine is handled on March 15 in Dippoldiswalde, Germany. Jens Schlueter/Getty Images

Europe has nearly eight million doses of AstraZeneca vaccine sitting unused, European Centre for Disease Prevention and Control data shows as of Sunday.
That is more than half the total number of doses distributed to European nations, the data shows.

It shows 14,851,497 doses have been distributed, while 6,895,411 have been used – leaving 7,970,323 doses unused.

Only Lithuania has used its full allocation, the data shows.

The ECDC notes that member states are asked to upload data at least twice a week, on Tuesdays for the preceding week and Friday for the current week, so there may be a lag in reporting.
 
2 hr 36 min ago

Canada sticks with AstraZeneca vaccine despite European concerns​

From CNN’s Paula Newton

Michael Gray moves a pallet of AstraZeneca Covid-19 vaccine doses in Ontario, Canada, on March 3.
Michael Gray moves a pallet of AstraZeneca Covid-19 vaccine doses in Ontario, Canada, on March 3. Carlos Osario/Pool/AP

Canada says it will continue with its rollout of the AstraZeneca vaccine despite concerns in Europe about a link between the shot and blood clots.

“Obviously we’re following what has been happening with a specific batch used in Europe but I can reassure all Canadians that no doses of AstraZeneca came from the same batch that has caused concerns in Europe,” Canadian Prime Minister Justin Trudeau said during a news conference in Montreal.

Health Canada confirmed last week that it is aware of reports of adverse events in Europe following immunization with the AstraZeneca Covid-19 vaccine, but said "the benefits of the vaccine continue to outweigh its risks."

“At this time, there is no indication that the vaccine caused these events. To date, no adverse events related to the AstraZeneca COVID-19 vaccine, or the version manufactured by the Serum Institute of India, have been reported to Health Canada or the Public Health Agency of Canada,” the statement posted last week said.

“The best vaccine for you to take is the first one that is offered to you,” Trudeau added Monday.

Canada’s vaccine regulator approved the AstraZeneca shot late last month, approving it for all Canadians over the age of 18, including seniors. However, Canada's National Advisory Committee on Immunization (NACI) chose not to recommend the AstraZeneca’s vaccine for people aged 65 years and older, due to what it called an insufficient amount of evidence for that age group.

Canadian provinces, responsible for administering vaccines, have taken different approaches, with some restricting the AstraZeneca vaccine to those under the age of 65.

Earlier Monday, Trudeau visited a mass vaccination site in downtown Montreal, a city that remains a stubborn hotspot for coronavirus infections.

Trudeau said that while he was relieved to see his mother get vaccinated in recent days, he has no firm date for receiving his own vaccine shot.

“I’m not overly focused on when my turn will come. When it comes, I will gladly get vaccinated but I will wait my turn,” he said.
 
如果荷兰打了几十万 AstraZeneca 疫苗,在最近极地涡旋不稳定、冷空气导致低温的情况下,10例血栓倒也不明显高于一般大众发生血栓的机率。还有待进一步调查和 AstraZeneca 疫苗的关联。

加拿大至少应加强 AstraZeneca 疫苗不适宜接种人群的事前排查和告知。已经收到的也就认了,应该改变优先顺序,不要急于给老人和有基础疾病的人施打。不过现在就算放开优先顺序,大家看了新闻也不太愿意打 AstraZeneca 了。普通人不了解哪个牌子属于以哪种原理开发的疫苗,为了不影响其它疫苗的声誉和接种积极性,加拿大如果决定暂停 AstraZeneca 疫苗也合理。

刚才在广播里,采访我村专家说,第一句话:任何疫苗都比没有疫苗强,然后挺激动地说:打阿斯利康疫苗后发生血栓的比例绝对没有超过一般的平均值,可是下文的报道荷兰收到10例血栓报告,估计这比例不会是正常值吧?

看来不少西方的医学专家也是要跟风向,为政府的政策吹风的。

4 min ago

Netherlands lab received 10 reports of blood clots in AstraZeneca recipients​

From CNN’s Mick Krever

A Dutch lab that monitors the use of pharmaceuticals says that it has received reports of 10 instances of blood clots in people who received the AstraZeneca Covid-19 vaccine, but none had the low blood platelet condition reportedly observed in Norway and Denmark.

Despite pausing the use of that vaccine for two weeks, the Dutch health ministry has made clear that it is still an open question whether blood clots have “any link with vaccination at all.”

“Thrombosis is of course a very common complaint,” Health Minister Hugo de Jonge said Monday. “And so if you are vaccinating a large group of people, it’s not crazy that there will also be people with thrombosis after vaccination.”



The Lareb Pharmacovigilance Center said it had not received any reports in the Netherlands of vaccine recipients with both blood clots and lowered platelet count.
 
最后编辑:
如果荷兰打了几十万 AstraZeneca 疫苗,在最近极地涡旋不稳定、冷空气导致低温的情况下,10例血栓倒也不明显高于一般大众发生血栓的机率。还有待进一步调查和 AstraZeneca 疫苗的关联。

加拿大至少应加强 AstraZeneca 疫苗不适宜接种人群的事前排查和告知。已经收到的也就认了,应该改变优先顺序,不要急于给老人和有基础疾病的人施打。不过现在就算放开优先顺序,大家看了新闻也不太愿意打 AstraZeneca 了。为了不影响其它疫苗的声誉和接种积极性,加拿大如果决定暂停 AstraZeneca 疫苗也合理。

以往这些欧洲国家发生血栓的概率是多少?

到现在一个统计资料都没有?
 
看到一个说法,normal incidence of blood clots is about one in 1,000 patients over the course of a year.
以往这些欧洲国家发生血栓的概率是多少?

到现在一个统计资料都没有?
 
看到一个说法,normal incidence of blood clots is about one in 1,000 patients over the course of a year.


不要1/1000的病人,要查所有人。
 
normal incidence of blood clots is about one in 1,000 patients over the course of a year
指的是 blood clots 在每 person-year 的发生率。好奇现在不怎么受冷空气影响的地区,接种 AZ 疫苗的不良反应发生率。
Blood clots 和疫苗的因果关系属于比较难以证明的那一种,因为没接种疫苗也可能发生,也可能归因于很多其它的原因。
有一些其他的严重不良反应虽然发生率低 (如果不是低到只发生一次),更容易从原理判定是否可能和疫苗有关。
不要1/1000的病人,要查所有人。
 
最后编辑:
normal incidence of blood clots is about one in 1,000 patients over the course of a year
指的是 blood clots 在每 person-year 的发生率。好奇现在不怎么受冷空气影响的地区,接种 AZ 疫苗的不良反应发生率。
Blood clots 和疫苗的因果关系属于比较难以证明的那一种,因为没接种疫苗也可能发生,也可能归因于很多其它的原因。
有一些其他的严重不良反应虽然发生率低 (如果不是低到只发生一次),更容易判定是否可能和疫苗有关。


你的数据证明,打疫苗降低了血栓发生率。
 
这个正常人血栓发生率 1 per 1000 person-year 的引用未必可靠。数量级或许差不太远,冬季应该多一些。
如要比较,incidence rate 也取决于新冠疫苗接种后的时间长度要怎么计算 (每人乘以时间累加后算入分母)。
更好的比较方式应该是把同一时期同一年龄段未接种疫苗的 electronic health records 全部查一下。

我不知道荷兰接种了多少剂 AstraZeneca,假设 100000,以下计算的目的仅仅是演示 incidence rate 怎么算的:
简化假设所有人的时间窗口是 0.1 year (实际每个人不一样,需累加),10/(100000*0.1) = 1 per 1000 person-year。
这个数字游戏有个问题:对于急性的严重不良反应,时间窗口越小,incidence rate 越大。
你的数据证明,打疫苗降低了血栓发生率。
 
最后编辑:

德国、荷兰丶爱尔兰纷纷暂停施打阿斯利康疫苗​

7 hours ago​

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阿斯利康公司表示,其疫苗与血栓风险增加无直接相关,但荷兰丶爱尔兰丶丹麦丶挪威等国基於对副作用的担忧,纷纷暂停推广此疫苗。德国也于3月15日跟进,宣布暂停使用该疫苗。​

(德国之声中文网)作为预防措施,德国暂停接种阿斯利康疫苗。德国联邦卫生部发言人周一(3月15日)表示,由此,联邦政府依循了保罗·埃利希研究所(PEI)的最新建议。在德国和欧洲其它国家又报告接种该疫苗不久即出现脑静脉血栓的病例后,该研究所认为有必要作进一步调查。欧洲药品管理局(EMA)将就 "新的认知是否以及会如何影响对该疫苗的批准" 作出决定。

同样基於对阿斯利康(AstraZeneca) 新冠疫苗副作用的担忧,荷兰与爱尔兰等国已经于14日宣布暂停使用该公司生产的疫苗。

由於担心患者在注射後出现血栓等问题,丹麦丶挪威丶保加利亚等国上周宣布暂停推广这家公司的疫苗。不过,世界卫生组织(WHO )表示該疫苗与血栓发生没有因果关系; 该疫苗制造商与欧洲的药品监管机构也坚持疫苗是安全的。

路透社報導,荷兰早已预定了1200万剂阿斯利康的疫苗,但政府在一份声明中表示,作为预防措施,他们在3月29日之前不会使用这款疫苗。原先,荷兰的卫生当局计划在未来两周内注射约29万支阿斯利康的疫苗。

荷兰政府说,丹麦和挪威的报告认为使用这款疫苗可能出现严重副作用。挪威卫生当局周六表示,挪威有三名最近施打过该疫苗的卫生工作者因出血丶血栓和血小板数量过低,正在医院接受治疗。

「我们不能允许对疫苗有任何怀疑,」荷兰卫生部长德容赫(Hugo de Jonge)说。「我们必须确保一切都是正确的,所以现在暂停是明智的。」

不过,荷兰卫生部表示在荷兰尚未发现此类病例,并补充说,目前还没有证据表明疫苗与丹麦和挪威的报告有直接关联。

阿斯利康发言人在周日表示,他们审查了超过1700万剂疫苗施打的报告病例安全数据,但没有证据表明血栓风险增加。「事实上,阿斯利康新冠疫苗发生此类事件的报告数量,是低於未接种人群自然发生此类事件的数量。」

疫苗副作用引发各国疑虑​

爱尔兰发言人告诉法新社,阿斯利康疫苗的行政从3月14日周日上午开始推迟。此举是爱尔兰的国家免疫谘询委员会(National Immunisation Advisory Committee)在挪威药品管理局(Norwegian Medicines Agency)发布了四份新的成人接种疫苗之後发生严重血栓事件的报告之後建议暂停推广,以作为预防措施。

爱尔兰副首席医疗官格林(Ronan Glynn)在一份声明中说,关於阿斯利康疫苗和血栓病例之间是否有任何联系,尚未得出结论,但他们已经采取行动,等待收到进一步的信息。

根据该国政府上周三更新的数据,迄今为止,爱尔兰已经注射了约57万剂新冠疫苗。其中共有10.9万支由阿斯利康生产。

该国目前正处于第三次封锁之中。此前他们经历了病例激增,使其在1月初成为世界上传染性最强的国家。

除了荷兰丶丹麦丶挪威和爱尔兰之外,冰岛也因凝血问题暂停使用该疫苗; 泰国则在周五跟进,成为欧洲以外第一个暂停此疫苗使用的国家。

意大利北部皮埃蒙特地区周日表示,一名教师在周六接种疫苗后死亡,他们将停止使用一批阿斯利康疫苗。奥地利上周也停止使用某一批次疫苗。

李玟仪/杨威廉(路透社丶法新社)
 

12%的预约者,当发现是AstraZeneca疫苗后,便拒绝注射。
一位名叫Sheldon Ashley 的蒙特利尔人在奥林匹克体育馆疫苗注射中心,当得知是AstraZeneca后,便“起身离开”。
 
还是干脆就没想打的和第一批打的省点心。那时候只批了一种,而且两针都打了。
现在批了四种。
 
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