My estimate of the VAERS under-reporting factor (URF) at 41 was based on anaphylaxis rates reported in the Blumenthal paper published in JAMA.
I have argued that the anaphylaxis rate is an appropriate number to use to (under) estimate deaths because I believed that deaths would be less reported than anaphylaxis to VAERS for two reasons: 1) usually lacks the time proximity to vaccination, 2) the person seeing the death may not know the vaccination status of the victim and may not technically be required to report the death.
Some people have quibbled with that assumption, including my friend Professor John Ioannidis, who argued that there is no evidence that that is true and it could be the other way around. It’s a fair point and I told John it’s only an estimate and I’m happy to modify it when we have more data.
That day has arrived courtesy of Wayne at VAERS Analysis.