‘Go big’: US doubles COVID vaccine purchases for global sharing

The United States says it will donate another half a billion doses of the Pfizer COVID-19 vaccine to countries struggling with the pandemic. President Joe Biden made the promise during a virtual coronavirus summit, on the sidelines of the UN General Assembly. In total, the US is promising to donate 1.1 billion doses. But South African leader Cyril Ramaphosa said Africa has not received its fair share of shots, calling the wealthy nations' actions “immoral”. Al Jazeera's Mike Hanna reports from the United Nations, New York, the US.

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