Biden reaches agreement to buy 200 million more COVID-19 vaccine doses by summer

President Joe Biden announced Tuesday the U.S. has reached an agreement to purchase an additional 200 million coronavirus vaccine doses, a boost that means the U.S. will have enough supply to fully vaccinate 300 million Americans by the end of summer or beginning of fall..

"This is a wartime undertaking. It's not hyperbole," Biden said during remarks on the COVID-19 pandemic at the White House.

Biden outlined the new purchase plans along with an increase in the weekly vaccine allocation to states, tribes and territories from 8.6 million doses to a minimum of 10 million doses over the next three weeks.

The additional purchases would raise the U.S. vaccine supply from 400 million doses to 600 million doses, ensuring that the country will eventually have two shots for nearly every American.