Director of the Medical and Health Technology Research and Development department of the National Health Commission Zheng Zhongwei, Deputy Director of the medical affairs and hospital administration of the National Health Commission Jiao Yahui, Vice Minister of the National Health Commission and head of the Vaccine R&D working group under the State Council's inter-agency task force Zeng Yixin, Head of Industrial Products Consumer Department of Ministry of Industry and Information Technology Mao Junfeng and Head of National Health Commission Disease Control Cui Gang take part in a news conference on COVID-19 vaccination, in Beijing, China December 19, 2020. REUTERS/Tingshu Wang