The U.S. is buying an additional 500 million doses of Pfizer's COVID-19 vaccine over the next year, which it will share with the global supply.
The U.S. is buying an additional 500 million doses of Pfizer's COVID-19 vaccine over the next year, which it will share with the global supply.
The U.S. is buying an additional 500 million doses of Pfizer's COVID-19 vaccine over the next year, which it will share with the..