A person familiar with the details said the plan will involve distributing all the doses through the the vaccine initiative COVAX to 92 developing countries and the African Union.
The deal would see the United States paying the "not for profit" price for the doses, with the first 200 million to ship this year and the remaining 300 million the next year.
White House national security adviser Jake Sullivan told reporters aboard Air Force One on Wednesday that in addition to the Pfizer purchase, Biden is also expected to take part in a combined announcement with the G7 on a comprehensive plan to end the pandemic. The news was first reported by the Washington Post.
"These deliveries will include, for the first time, doses from Moderna's US supply chain".
"Moderna will deliver seven million doses in June with shipments commencing next week", Anand announced Wednesday. Officials say a quarter of the nation's excess will be kept in reserve for emergencies and for the U.S.to share directly with allies and partners.
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Diana, the former wife of Prince Charles and mother to Harry and his elder brother William, died in a Paris vehicle crash in 1997. Her grandfather, King George V, would affectionately call her Lilibet , imitating her own attempts to say her name.
The White House has also directed doses to allies including South Korea, Taiwan and Ukraine. "Findings from the extended timeframe of this study add to accumulating evidence that mRNA COVID-19 vaccines are effective and should prevent most infections - but that fully vaccinated people who still get COVID-19 are likely to have milder, shorter illness and appear to be less likely to spread the virus to others".
But others have called on the U.S.to do even more. "It's time to let the world help itself". "We have purchased from Sinopharm 100,000, doses of the Sinopharm vaccine", he said.
"To be clear, that is the minimum number of doses were anticipate to receive within that timeframe".
Biden last month broke with European allies to endorse waiving intellectual property rules at the World Trade Organization to promote vaccine production and equity. These groups are more likely to be exposed to the virus that causes COVID-19 due to their occupations.