这种说法没有数据支持。P和M的三期数据表明：六个月时仍有效。更长期的结果仍在观察中，估计下次会有九个月的数据

PFIZER AND BIONTECH CONFIRM HIGH EFFICACY AND NO SERIOUS SAFETY CONCERNS THROUGH UP TO SIX MONTHS FOLLOWING SECOND DOSE IN UPDATED TOPLINE ANALYSIS OF LANDMARK COVID-19 VACCINE STUDY
https://www.pfizer.com/news/press-release/press-release-detail/pfizer-and-biontech-confirm-high-efficacy-and-no-serious

• Analysis of 927 confirmed symptomatic cases of COVID-19 demonstrates BNT162b2 is highly effective with 91.3% vaccine efficacy observed against COVID-19, measured seven days through up to six months after the second dose
• Vaccine was 100% effective in preventing severe disease as defined by the U.S. Centers for Disease Control and Prevention and 95.3% effective in preventing severe disease as defined by the U.S. Food and Drug Administration 
• Vaccine was 100% effective in preventing COVID-19 cases in South Africa, where the B.1.351 lineage is prevalent
• Vaccine safety now evaluated in more than 44,000 participants 16 years of age and older, with more than 12,000 vaccinated participants having at least six months follow-up after their second dose
• The companies plan to share these results with worldwide regulatory agencies soon

 

 

Moderna says new data shows its Covid vaccine is more than 90% effective against virus six months after second shot

https://www.cnbc.com/2021/04/13/covid-vaccine-moderna-says-new-data-shows-its-90percent-effective-six-months-after-second-dose.html

• Moderna said Tuesday its Covid-19 vaccine was more than 90% effective at protecting against Covid and more than 95% effective against severe disease up to six months after the second dose.
• The new data included cases through April 9 and evaluated over 900 cases, including more than 100 severe cases.
• The update brings Moderna a step closer to filing its request for full U.S. approval for its vaccine.
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所有跟帖： 

• 哦，我怎么前两天在哪里看到说是最少70天的免疫力。 -大白天下- ♀ (0 bytes) () 04/28/2021 postreply 15:58:11