Claim: New Covid-19 vaccines contain levels of mercury that cause brain damage.
Fact-check: There's no evidence that mercury-based chemicals in a Covid-19 vaccine would cause harm - Full Fact
Verdict: most commonly given vaccines in the uk do not contain the mercury-based chemical thiomersal. we don't know if future covid-19 vaccines will contain it, but even if they do, there is no evidence that it causes harm in the amount contained in vaccines.
Organisation: Full Fact
Author: Pippa Allen-Kinross
Date published: 2020-11-12T00:00:00