Serious concern mutant Covid strains like South Africa variant could evade vaccines, warns Vallance
20 Jan 2021, 9:57
Updated: 20 Jan 2021, 15:32
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COVID variants such as the one from South Africa are a "real issue of concern", Sir Patrick Vallance has warned.
The Chief Scientific Adviser said there are unanswered questions as to whether the immune system will be able to attack the "more worrying" strains.
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Sir Patrick Vallance has warned the South African and Brazilian Covid variants are a "real issue of concern" in regards to vaccinesCredit: Sky News
It means scientists are still unsure whether those who have immunity from either infection or a vaccine are protected against new strains.