The United States on Wednesday called on countries around the world to commit to vaccinating 70 percent of the global population against the novel coronavirus by next September, while vowing to donate an additional 500 million vaccine doses to poorer nations.The new pledge, which will bring the country's total vaccine donations abroad to over 1.1 billion doses, was made during a virtual COVID-19 summit President Joe Biden convened on the margins of the U.N. General Assembly in a bid to end the pandemic that has already killed over 4.5 million people globally."This is an all-hands-on-deck cr…READ FULL ARTICLE