BEIJING, Jan. 30 (Xinhua) -- As the coronavirus wreaks havoc on the world, vaccine has become a hope for humanity to conquer the pandemic. Have a glimpse of production process of China's inactivated COVID-19 vaccine. The production of inactivated vaccine contains six steps: cultivation, inactivation, purification, formulation, filling and packaging. From cell cultivation to packaging, an inactivated COVID-19 vaccine needs 48 days to be produced.
