加拿大对本国新冠疫苗的研究报告（分析了42万人）：极为有效 2针PFIZER疫苗 对Delta变种的有效率高达87%

[多伦多上空的鸟]

Vaccines extremely effective against COVID variants of concern: Canadian study

Whether it's Pfizer, Moderna or Astra Zeneca, the vaccines used in Canada 'are doing exactly what they should be doing,' including against the Delta variant

www.macleans.ca

加拿大对42万人的分析结论：加拿大打的3种疫苗 Pfizer, Moderna and AstraZeneca ，

对4大新冠变种 Alpha (B.1.1.7), Beta (B.1.351), Gamma (P.1), and Delta (B.1.617.2). ,

的防护极为有效。

报告称2针PFIZER 对Delta变种的有效率高达87%

PFIZER	MODERNA	ASTRAZENECA
Symptomatic infection
vs. Alpha: 1st dose: 66% effective 2nd dose: 89%	vs. Alpha 1st dose: 83% effective 2nd dose: 92%	vs. Alpha 1st dose: 64% effective 2nd dose: n/a
vs. Beta/Gamma: 1st dose: 60% effective 2nd dose: 84%	vs. Beta/Gamma: 1st dose: 77% 2nd dose: n/a	vs. Beta/Gamma: 1st dose: 48% 2nd dose: n/a
vs. Delta: 1st dose: 56% effective 2nd dose: 87%	vs. Delta: 1st dose: 72% 2nd dose: n/a	vs. Delta: 1st dose: 67% 2nd dose: n/a
Hospitalization or death
vs. Alpha: 1st dose: 80% effective 2nd dose: 95%	vs. Alpha: 1st dose: 79% effective 2nd dose: 94%	vs. Alpha: 1st dose: 85% effective 2nd dose: n/a
vs. Beta/Gamma: 1st dose: 77% effective 2nd dose: 95%	vs. Beta/Gamma: 1st dose: 89% effective 2nd dose: n/a	vs. Beta/Gamma: 1st dose: 83% effective 2nd dose: n/a
vs. Delta: 1st dose: 78% effective 2nd dose: n/a	vs. Delta: 1st dose: 96% effective 2nd dose: n/a	vs. Delta: 1st dose: 88% effective 2nd dose: n/a

研究报告全文：

https://www.medrxiv.org/content/10.1101/2021.06.28.21259420v1.full.pdf

 

[kittylee]

Moderna的数据比辉瑞更好

 

[victorsu99]

Moderna的数据比辉瑞更好

由于莫德纳的接种量比辉瑞还是查了不少，6月中下旬才陆续开打第二剂，所以第二剂的数据分析还没跟上，不过总体看应该至少不次于辉瑞。

 

[vgswe]

moderna剂量比辉瑞大 可能因此免疫效果更强

 

[小小喇叭]

这里说只有 64%。

ZT： 94%跌至64%！辉瑞对Delta变种有效性骤降

94%跌至64%！辉瑞对Delta变种有效性骤降 - 新闻中心

 

[木水码头]

怎么看是辉瑞最差呀！咋口碑还成最好的了

 

[kittylee]

辉瑞疫苗的供应可能比莫德纳更稳定，辉瑞疫苗的安全性数据最好，而且12-17岁的只能接种辉瑞疫苗，接种辉瑞疫苗的人数应该最多。欧盟向美国采购的18亿支疫苗也是辉瑞的。