Yet, by mid-December, some 16 countries representing only 14% of the world's population had preordered more than 10 billion vaccine doses or about 51% of the available world supply. Specifically, Canada, Australia, and Japan having only 1% of the world's COVID‑19 cases had collectively reserved some one billion vaccine doses, while the COVAX Facility had reserved only a few hundred million doses. Concerns were raised that wealthy countries may receive their vaccines in 2020–21 while developing countries may be excluded from vaccinations until 2023–24. Data from April 2021 comports with this expectation since 25% of the population in high income countries have been vaccinated compared to only 0.2% in low income countries. At the Group of Seven summit in June 2021, the United States promised to distribute 500 million vaccine doses internationally; this distribution began on 17 August.