Alongside a new 500-million COVID-19 vaccine dose pledge yesterday from the United States to help bridge the world's supply gap for lower-income countries, several other countries announced fresh support, the World Health Organization (WHO) and its partners said today.The pledges came in response to a mostly virtual global COVID-19 summit, hosted by US leaders and held on the sidelines of the United Nations (UN) General Assembly meeting under way in New York this week.Pledges, with pleas for urgent follow-throughIn a statement today summing up major announcements that came at the summit, the WHO said Sweden pledged an additional $243 million in cash contributions and vaccine that it will make available in 2021 and 2022.Other dose donations