Claim: Covid-19 barely mutated before vaccines were rolled out.
Fact-check: Covid-19 mutated long before mass vaccine roll-outs - Full Fact
Verdict: this is untrue. all four variants of concern, designated as such by the world health organisation, were identified before mass public vaccination programmes began.
Organisation: Full Fact
Author: Sarah Turnnidge
Date published: 2021-07-09T00:00:00