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ד'ר ניר צבר, גריאטר's avatar

It seems that the initial rate of severe adverse events from Pfizer's BNT162b2 mRNA Covid-19 Vaccine was (silently) reported on November 4, 2021.

Please look at this https://www.nejm.org/doi/full/10.1056/nejmoa2110345

article's Supplementary Appendix: https://www.nejm.org/doi/full/10.1056/nejmoa2110345#:~:text=2005KB-,Supplementary%20Appendix,-PDF

and watch Table S3: "Participants Reporting at Least 1 Adverse Event from Dose 1 to 1 Month After Dose 2 During the Blinded Follow-up Period".

This table reports about 262 persons with Severe Adverse Events in the (21,926) BNT162b2 group, versus 150 in the (21,921) placebo group.

Using MedCalc's 'Comparison of two rates' for statistics, the incidence rate difference is 0.5% (95% Confidence Interval 0.33% to 0.69%) with P-value of less than 0.0001.

This means that about one person in every 200 persons injected with Pfizer’s mRNA vaccine suffered a related severe adverse event. Number Needed to Harm between 144-300 with 95% confidence.

So yes, severe adverse events of this jab are 'uncommon' but definitely not rare, and this was probably known to Pfizer quite early on...

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Keith Dudleston's avatar

I just hope this content is presented to the UK covid enquiry and that it has an open mind and takes these points on board.

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