Thousands to be given booster Covid jab in world-first clinical trial

People are being invited to sign up to get a third dose of a Covid vaccine in a world-first clinical trial to see if this could give more protection.

Scientists want people who received their first dose of either Pfizer/BioNTech or AstraZeneca in December or January to sign up.

They will be given one of seven vaccines, with experts believing that all of them will boost immunity.

To sign up, go to this website and register interest.

Some 2,886 people aged 30 and older are being recruited at 18 NHS sites from London to Glasgow, with the first booster jabs administered in early June.

Lab studies will check their response to variants circulating in the UK, including those from India, Kent and South Africa.

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The results could influence which jabs could be used in any forthcoming vaccination programme this autumn.

The £19.3 million clinical trial will test the Pfizer jab alongside those from AstraZeneca, Moderna, Novavax, Janssen from Johnson & Johnson, Valneva and CureVac.

Three of the vaccines will also be tested at a half dose, with experts expecting an adequate immune response at this level.

More follows.

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