Ministers promise that all Brits who are eligible will receive a second Covid jab within weeks.
Pfizer will be given the go-ahead for treatment that targets both the coronavirus original and Omicron BA.1 strains that followed it.
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It comes after regulators approved Moderna’s new jab on Monday.
Doses are already on order for the NHS’s autumn rollout that will cover 26million people and kicks in next month.
Scientists believe a booster can prevent winter hospitalisations. They urge Brits to get a booster as soon as possible.
Prof Anthony Harnden, of the Joint Committee on Vaccination and Immunisation, said: “People need to get vaccinated rather than worrying too much about the type.
“These are all very good vaccines, which have proven efficacy against hospitalisation and death.”
Original vaccines – the ones used in previous rollouts – will be on standby for anyone who cannot get a new booster.
Scientists advised that people not delay top-up to get the right type. Mixing and matching has been proven safe.
Flu will likely surge along with Covid as the weather changes, threatening a double virus whammy.