But scientists say Britain could be quickly pulled back into chaos by dangerous Covid variants – mutated versions of the original coronavirus that could escape the protection offered by the vaccines. Still, scientists speaking to this newspaper say the current threat of Covid variants may have been overstated. Other scientists say panic about variants demonstrates a 'misunderstanding' about how vaccines work. Covid vaccines prompt the body to begin producing these T-cells. In the meantime, British virus experts are confident they will be able to spot any worrying variants.

Source: The Nation April 24, 2021 21:33 UTC