Vaccine Booster

US biotech company Moderna announced on Wednesday that it has begun clinical trials of a booster dose of vaccine designed specifically to combat the omicron variant of the coronavirus. The trials will involve a total of 600 adults — half…
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Boris Johnson’s government said every adult in England has had the chance to receive a Covid-19 vaccine booster, the critical part of its strategy for tackling the fast-spreading omicron variant. More than 28.1 million people in England…
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