The federal government will purchase an additional 200 million doses of Pfizer’s and Moderna’s two-dose COVID-19 vaccines, the White House announced Tuesday (Jan. 26). President Joe Biden said the purchase will increase the total vaccine order for the United States up to 600 million doses, enough to vaccinate 300 million Americans by the end of the summer or early fall. Biden also said his administration has already identified suppliers who can, under the Defense Production Act, ramp up supplies and...