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Fourth Covid jab can give higher immunity than initial booster, study finds

UK-based team finds antibodies peaked higher after fourth jab given after gap of more than six months than after third A fourth dose of a Covid vaccine can ramp up the body’s immune defences beyond the peak achieved after a third dose, research suggests. A second booster – often a fourth dose of a Covid vaccine – is currently offered in the UK to those aged 75 or over, people living in care homes for older people, and those over the age of 12 who are immunosuppressed. Continue reading...

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