(200414) — BEIJING, April 14, 2020 (Xinhua) — A staff member displays samples of the COVID-19 inactivated vaccine at Sinovac Biotech Ltd., in Beijing, capital of China, March 16, 2020. China has approved two COVID-19 inactivated vaccine candidates for c

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२०७७, ९ आश्विन शुक्रबार १४:०४ मा प्रकाशित

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