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LONDON. The UK drug regulator has approved the Jassen single-dose vaccine, from the pharmaceutical company Johnson & Johnson. The British government has ordered 20 million doses of the vaccine, considered 85% effective against Covid and which will be the fourth used in the British vaccination campaign.
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Over 38 million people, nearly three-quarters of the adult population, have received at least one dose of the vaccine in the UK, the website reads. Bbc.