Vaccine efficacy is generally reported as a relative risk reduction (RRR) fake like the vaccines and ARR the truth they never told you about.
0·9% for the Pfizer–BioNTech, 1% for the Gamaleya, 1·4% for the Moderna–NIH, 1·8% for the J&J, and 1·9% for the AstraZeneca–Oxford vaccines.
Back in 2020-21 The Lancet Published this article which I've previously mentioned:
Vaccine efficacy is generally reported as a relative risk reduction (RRR). It uses the relative risk (RR)—ie, the ratio of attack rates with and without a vaccine—which is expressed as 1–RR. Ranking by reported efficacy gives relative risk reductions of 95% for the Pfizer–BioNTech, 94% for the Moderna–NIH, 91% for the Gamaleya, 67% for the J&J, and 67% for the AstraZeneca–Oxford vaccines. However, RRR should be seen against the background risk of being infected and becoming ill with COVID-19, which varies between populations and over time. Although the RRR considers only participants who could benefit from the vaccine, the absolute risk reduction (ARR), which is the difference between attack rates with and without a vaccine, considers the whole population. ARRs tend to be ignored because they give a much less impressive effect size than RRRs: 1·3% for the AstraZeneca–Oxford, 1·2% for the Moderna–NIH, 1·2% for the J&J, 0·93% for the Gamaleya, and 0·84% for the Pfizer–BioNTech vaccines.
ARR is also used to derive an estimate of vaccine effectiveness, which is the number needed to vaccinate (NNV) to prevent one more case of COVID-19 as 1/ARR. NNVs bring a different perspective: 81 for the Moderna–NIH, 78 for the AstraZeneca–Oxford, 108 for the Gamaleya, 84 for the J&J, and 119 for the Pfizer–BioNTech vaccines. The explanation lies in the combination of vaccine efficacy and different background risks of COVID-19 across studies:
0·9% for the Pfizer–BioNTech, 1% for the Gamaleya, 1·4% for the Moderna–NIH, 1·8% for the J&J, and 1·9% for the AstraZeneca–Oxford vaccines.
https://www.thelancet.com/journals/lanmic/article/PIIS2666-5247(21)00069-0/fulltext#%20
Me: Must be reassurring to see how effective the vaccines were before you volunteered to have them. Pity the new vaccines have never been tested by The Lancet - I wonder why not?
So Pfizer ARR 0.84% effective against Covid which is just 99.16% more effective than Pfizer's vaccine, no wonder people caught Covid, could not clear it and passed it on to someone else, don't you think?
Me: To open a link in blue, click on it, then accept you want to load the link and hey presto there it is, right off this page without having to do anything else. If it won't load in substack, disconnect Substack and click the link from the copied page on your desktop.