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https://www.facebook.com/TuckerCarlsonTonight/posts/1502702733486635/
https://leadstories.com/hoax-alert/2022/10/fact-check-pfizer-covid19-vaccine-clinical-trial-not-intended-to-test-effect-on-transmission.html?fbclid=IwAR2My1m-K3GbLp6rlLn2EBec0xVFbQoVGHE0lFcjnJkSUYmZj8-lA5iUHM0
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COVID vaccines slash risk of spreading Omicron — and so does previous infection
https://www.nejm.org/doi/full/10.1056/nejmoa2116597
疫苗投产前靠那两组对照当然无法知道疫苗能防传染的具体数据,但之后的数据证实了减少传染。
Studies done after distribution of the COVID-19 vaccines began, including research by Pfizer, did find that the company’s shot reduced asymptomatic infections in addition to symptomatic cases with earlier variants of the virus. Researchers in the United Kingdom reported in a February observational study that Pfizer’s vaccine helped cut transmission of the alpha and delta variants.
“Our study from earlier in the year shows that the Pfizer vaccine reduces transmission from people with breakthrough infections, at least in the 3 months post vaccine which we studied,” Dr. David Eyre, a professor of infectious diseases at the University of Oxford and lead author of the study, wrote in an email.
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