时间：2020-07-22 08:16:40人气：8618来源： 迪拜新闻网
File photo shows a staff member displays samples of the COVID-19 inactivated vaccine at Sinovac Biotech Ltd., in Beijing. (Xinhua File/Zhang Yuwei)
A phase 2 trial of a COVID-19 vaccine candidate in China has found that the vaccine is safe and induces an immune response, according to a new study published Monday in medical journal The Lancet.
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