Covid vaccine: Will there ever be a one-time Covid jab? Expert outlines 'challenges'

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Changes to the spike protein that ultimately come with most variants create an “ever-changing target” and make it increasingly challenging for scientists to create the one-time jab, Dr Fivelman added.

When addressing the UK in the latest Covid press conference alongside Boris Johnson, England’s Chief Medical Officer Professor Chris Whitty warned that more variants could be on the way.

And the next round of variants could prove more “severe” than game-changer Omicron was when it emerged last year.

At the same time, navigating future winters may leave people in a more “tricky” position.



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