According to a person familiar with the matter, Biden was set to announce a significant new purchase of vaccines to share with the world, and to set targets for other nations to hit. The existing gaps between nations with regard to the vaccination process are unheard of,” Colombian President Iván Duque said. The World Health Organization has long decried vaccine inequity between rich and poor countries. “G-7 countries have shown limited political will to address vaccine inequities, despite having it in their power to do so. Associated Press writers Josh Boak at the United Nations and David Biller in Rio de Janeiro contributed to this report.