US government agrees to buy 100m extra doses of Pfizer vaccine

• Pfizer and BioNTech plan to deliver doses by mid-summer
• 18m Covid-19 cases in the US, with 322,849 recorded deaths

Pfizer and BioNTech will provide the US with an additional 100m doses of coronavirus vaccine by mid-summer under a new $2bn deal with the American government.

This addition means that Pfizer and BioNTech will deliver a total of 200m doses to the US and enable some 100 million people to be inoculated against the deadly virus.