A ground crew member transports 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)

Ethiopian Minister of Health Lia Tadesse attends 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)

The COVID-19 vaccines from COVAX arrive 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)

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)

The COVID-19 vaccines from COVAX arrive 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)

The COVID-19 vaccines from COVAX arrive 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)