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Britain begins ‘booster’ shot trial of 7 different Covid-19 vaccines, Europe News & Top Stories


LONDON (REUTERS) – Britain launched a nationwide study on Wednesday (May 19) to explore whether giving a third dose “booster” shot of coronavirus vaccines would be safe and effective in extending immune protection against Covid-19.

The trial, which aims to recruit nearly 3,000 participants, will look at seven different Covid-19 shots, some of which are already approved by regulators and in wide use and others that are still in development.

British officials have been planning for the possibility of a booster vaccination campaign before the winter after initially targeting immunisation with a two-dose schedule for the whole adult population by the summer.

Major vaccine makers, as well as some policymakers in the United States, have also suggested that booster or even annual Covid-19 shots might be needed. But some global health experts have questioned whether there is evidence to show such repeat vaccinations are necessary.

Saul Faust, a professor of paediatric immunology and infectious diseases at Britain’s Southampton University who will co-lead the trial, said its findings would inform vaccination strategy planners and politicians “in their decision on whether to boost anybody with a third at all, or – if they are going to get a booster – which vaccine might be used”.

The vaccines being evaluated include the Pfizer, AstraZeneca and Moderna Covid-19 shots already being rolled out in Britain, as well as vaccines from Johnson & Johnson, Novavax, Valneva and CureVac for which Britain has future supply deals.

They will be given as third shots to people who have received two doses of Pfizer or AstraZeneca’s vaccine already, with initial findings expected in September.

“The data from this world-first clinical trial will help shape the plans for our booster programme later this year,” health minister Matt Hancock said.

Hancock also said Britain would host an in-person G7 health ministers meeting in Oxford on June 3-4, ahead of a leaders meeting later in the month.





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