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National Health Service (NHS) staff applaud Margaret Keenan, 90, as she is returned to her ward after becoming the first person in the U.K. to receive the Covid-19 vaccine at University Hospital in Coventry, U.K., on Tuesday, Dec. 8, 2020. The vaccine shots, created by Pfizer Inc. and BioNTech SE, have been made available to 50 hospital hubs around the country, before being distributed to doctor-run vaccination centers that will administer the jabs. Photographer: Jacob King/PA Wire/Bloomberg via Getty Images