Manila, Nov. 12 -- More than 80 percent of the US drugmaker Pfizer's coronavirus disease 2019 (Covid-19) vaccine has already been sold to the richest governments across the world, according to an analysis by a UK-based campaign group.

The Global Justice Now analysis shows that more than 1 billion doses have been bought by rich governments, which represent only 14 percent of the global population.

Big purchases include the European Union with 200 million doses and an option for a further 100 million, the United Kingdom with 40 million, and the United States with 100 million and an option to buy another 500 million, according to the group.

Pfizer's coronavirus vaccine candidate is more than 90 percent effective in preventing Covid-19, the ...