US buys 200M more doses of Pfizer vaccine, option for ‘updated version’

The federal government has bought an additional 200 million doses of the Pfizer-BioNTech COVID-19 vaccine that are expected to be delivered from October 2021 through April 2022, the companies announced Friday.

That brings the total number of doses of the two-shot vaccine purchased by the US to 500 million, the companies said. The companies said they expect to deliver 110 million of the doses by the end of 2021, with the remaining 90 million doses to be delivered no later than April 30, 2022.