WASHINGTON (AP) — The U.S. will buy 500 million more doses of the Pfizer COVID-19 vaccine to share through the global COVAX alliance for donation to 92 lower income countries and the African Union over the next year, a person familiar with the matter said Wednesday.
President Joe Biden was set to make the announcement Thursday in a speech before the start of the Group of Seven summit. Two hundred million doses — enough to fully protect 100 million people — would be shared . . .