How deadly are the new Covid variants and can they defy our vaccines?
By ITV News
UK. South Africa. Brazil.
The new variants of the Covid-19 vaccines - originating here and in Africa and South America - are now common parlance but how deadly are they and can the current vaccines protect against them?
With some concerning news emerging from South Africa, Science Editor Tom Clarke explains everything you need to know on the various variants to Lucrezia Millarini.
Why do they occur? Can we expect more? And why could there be more undetected variants in the US that we may not know about? Tom will explain all...