Trials begin on Covid booster jab hoped to protect against new variants
by Nicola Davis Science correspondent from on (#5PSW2)
Self-amplifying mRNA jab aims to trigger immune response towards virus's spike and non-spike proteins
The first trials have begun of a Covid booster jab that it is hoped will offer good protection against a wide range of variants, researchers have revealed.
Covid jabs currently used in the UK trigger an immune response towards the coronavirus spike protein, which helps the virus get into human cells.
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