Trust the Evidence

Trust the Evidence

The reported harms of Vaxrevia

The Secret Squirrels in (in)Action

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Tom Jefferson and Carl Heneghan
Nov 22, 2025
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We have shared the MHRA responses to our FOI requests regarding the reported suspected harms of the COVID-19 AstraZeneca Vaccine (AZD1222 / ChAdOx1-S), now christened Vaxrevia. The triumph for British science, according to Mr Johnson, in 2020:

But the vaccine was dropped rapidly after some un-British things happened.

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From the UK perspective, things started going pear-shaped in the spring of 2021. The European regulator was unhappy with reports of clotting problems, and we have shown that the data in the EMA’s possession did not align with the UKHSA’s reports by March 2021.

Vaxrevia DATA RELEASE - 2

Vaxrevia DATA RELEASE - 2

Tom Jefferson and Carl Heneghan
·
November 21, 2025
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However, all was not lost, as the UKHSA had set up the Commission on Human Medicines (CHM) COVID-19 Vaccines Benefit-Risk Expert Working Group. We serialised the proceedings nearly a year ago in 26 posts.

The MHRA papers - an Introduction

The MHRA papers - an Introduction

Tom Jefferson and Carl Heneghan
·
December 20, 2024
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Because of the layers of secrecy surrounding the body, we nicknamed the committee “Secret Squirrels”.

On 26 April 2021, the MHRA secret squirrel brigade met and minuted their discussion on thromboembolic event reports f…

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