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%


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%

PFIZERMODERNAASTRAZENECA
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:

 

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