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John Nkengasong, the Africa Centers for Disease Control and Prevention (Africa CDC) Director, speaks at an arrival ceremony for the COVID-19 vaccines from COVAX at Bole international airport in Addis Ababa, Ethiopia, March 7, 2021. Ethiopia on Sunday received its first 2.2 million COVID-19 vaccines from COVAX, crucial in the east African country's fight to stop the spread of the pandemic. (Photo by Michael Tewelde/Xinhua)