COVID-19 vaccine

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Doctor in white rubber protective gloves putting adhesive bandage on young man's arm after scratch on skin or injection of vaccine. First aid. Medical, pharmacy and healthcare concept. Closeup.

COV-BOOST trial data show value of fourth dose

Administering a fourth dose of an mRNA COVID-19 vaccine provides a stronger level of protection than a third dose, particularly in the over-70s, according to the latest readout from the UK