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A health worker administers the COVID-19 vaccine at a drive-through vaccination center in Kigali, Rwanda, on April 17, 2021. (Photo by Cyril Ndegeya/Xinhua)
A health worker administers the COVID-19 vaccine at a drive-through vaccination center in Kigali, Rwanda, on April 17, 2021. (Photo by Cyril Ndegeya/Xinhua)