Claim: Serious adverse effects reported by the public after vaccination are thought to represent only 10% of the true rate of serious adverse events.
Fact-check: Andrew Bridgen's vaccine debate claims fact checked - Full Fact
Verdict: the medicines and healthcare products regulatory agency  has specifically warned this estimate shouldn't be used for covid-19 vaccines, given there was high public awareness of its yellow card scheme.
Organisation: Full Fact
Author: Sarah Turnnidge
Date published: 2022-12-15T00:00:00