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A medical worker shows a vial of the COVID-19 vaccine at a mass vaccination venue converted from the Cairo's International Exhibition Center in Cairo, Egypt, on May 25, 2021. (Xinhua/Ahmed Gomaa)
A medical worker shows a vial of the COVID-19 vaccine at a mass vaccination venue converted from the Cairo's International Exhibition Center in Cairo, Egypt, on May 25, 2021. (Xinhua/Ahmed Gomaa)