Under pressure, U.S. donates half billion more COVID-19 vaccine doses to world

The United States promised to buy 500 million more COVID-19 vaccine doses to donate to other countries as it comes under increasing pressure to share its supply with the rest of the world. President Joe Biden made the announcement during a virtual summit aimed at boosting global vaccination rates against the coronavirus and rallying world leaders to do more. 'To beat the pandemic here we need to beat it everywhere,' Biden said as he kicked off the summit, which included leaders from Britain, Canada, Indonesia and South Africa as well as World Health Organization head Tedros Adhanom Ghebreyesus.