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Health workers wait to receive China's Sinovac COVID-19 vaccine during mass vaccination program for health workers as the main priority group in Medan, North Sumatra, Indonesia, Feb. 10, 2021. (Photo by Alberth Damanik/Xinhua)
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Health workers receive China's Sinovac COVID-19 vaccine during mass vaccination program for health workers as the main priority group in Medan, North Sumatra, Indonesia, Feb. 10, 2021. (Photo by Alberth Damanik/Xinhua)