Some governments say getting vaccinated and having proper documentation will smooth the way to travel, entertainment and other social gatherings in a post-pandemic world.
Ghana is among 92 low-and middle-income countries that are receiving vaccines for free through COVAX.
Boris Johnson confirmed Britain will be sending all of its surplus vaccines to COVAX, a development that could place Trudeau in a hot seat.
The move comes as Canada has asked the U.S. for help with its vaccine supplies.
Some groups have criticized Canada for planning to take the delivery of 1.9 million doses from COVAX, a new international vaccine-sharing program designed to help poor countries.
Some experts warn that these new deals could move COVAX further to the back of the line, especially if some countries are willing to pay a premium for speed.
'Our contribution to the global mechanism had always been intended to access vaccine doses for Canadians as well as to support lower income countries,' said a spokesperson.
China has shipped large numbers of doses of its own vaccines to developing countries. It has pursued deals with over 30 nations exceeding the 10M doses it is providing to COVAX.
'It's actually a day to look forward to, I think. Once there is choice, we'll know that there are adequate supplies and that'll be a good thing,' said bioethicist Charles Weijer.
WHO Director-General Tedros Adhanom Ghebreyesus said the prospects for equitable distribution were at "serious risk."
COVAX — created to ensure the entire world has access to COVID-19 vaccines — has secured only a fraction of the 2 billion doses it hopes to buy over the next year.
Secretary-General Antonio Guterres appealed for $4.2 billion in the next two months for the World Health Organization's COVAX program.
COVAX is offering participants COVID-19 doses for at least 20 per cent of each country's population that will be delivered as soon as they're available.