The United States has donated and shipped more than 110 million doses of Covid-19 vaccines to more than 60 countries, ranging from Afghanistan to Zambia, the White House has announced.

President Joe Biden has promised that the US will be the arsenal of vaccines for the world, and it has shipped the most vaccines abroad of any donor nation, according to AP.

The 110 million doses, the US has donated largely through a global vaccine program known as Covax, represent a fraction of what is needed worldwide.

The White House says the US will begin shipping 500,000 doses of Pfizer vaccine at the end of August that it has pledged to 100 low-income countries by June 2022.