MD REPORTS

MD REPORTS

The Serious Adverse Events of mRNA Covid-19 Vaccine Trials

Maryanne Demasi, PhD's avatar
Maryanne Demasi, PhD
Jul 11, 2022
∙ Paid

In December 2020, the US FDA authorised the Moderna and Pfizer mRNA covid-19 vaccines, claiming “the benefits outweighed the harms.”

Now, a group of international researchers has gone back to re-analyse the original trial data upon which that claim was made. 

A valid claim?

A pre-print study (not yet peer-reviewed) by Fraiman and colleagues contradicts the FDA’s claim that the benefits outweigh the harms of the mRNA vaccines.

In fact, the authors conclude that the vaccines are associated with an “increased risk of serious adverse events” that surpass the “risk reduction for covid-19 hospitalisation” relative to the placebo group.

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2026 Maryanne Demasi · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture