U.S. to buy hundreds of millions more doses of Pfizer vaccine to donate to the world

The Biden administration is buying hundreds of millions more doses of the Pfizer-BioNTech coronavirus vaccine to donate to the world, according to two people familiar with the deal, as the United States looks to increase efforts to share vaccine with the global population.

The administration is expected to purchase 500 million doses, but the terms are not finalized, said the people with knowledge of the deal, who spoke on the condition of anonymity because they were not authorized to discuss the donation.