UK starts virus campaign with a shot watched round the world

Margaret Keenan, 90, is applauded by staff as she returns to her ward Tuesday after becoming the first patient in the UK to receive the Pfizer-BioNTech COVID-19 vaccine, at University Hospital, Coventry, England. (Jacob King/Pool via AP)

LONDON — A nurse rolled up 90-year-old Margaret Keenan’s sleeve and administered a shot watched round the world — the first jab in the U.K.’s COVID-19 vaccination program kicking off an unprecedented global effort to try to end a pandemic that has killed 1.5 million people.