UK scientists back Covid boosters as study finds post-jab falls in antibodies
Exclusive: Waning antibody levels are possible warning sign of lower protection in months after vaccination
Scientists have backed proposals for Covid boosters in the autumn after blood tests on hundreds of people revealed that protective antibodies can wane substantially within weeks of second vaccine shots being given.
Falls in antibodies after vaccination are expected and do not necessarily mean people are more vulnerable to disease, but the researchers are concerned that if the declines persist the effectiveness of the vaccines may diminish.
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