US President Joe Biden addresses the 76th Session of the UN General Assembly at United Nations headquarters in New York, on Tuesday, Sept. 21, 2021. (Timothy A. Clary/Pool Photo via AP)
US President Joe Biden is set to push well-off nations to do more to get the Covid-19 pandemic under control around the world, as world leaders, aid groups and global health organizations sound the alarm about the slow pace of global vaccinations.