affiliation not provided to SSRN, Government of the People's Republic of China - National Institutes for Food and Drug Control, Henan Provincial Center for Disease Control Prevention, affiliation not provided to SSRN, Walvax Biotechnology Co Ltd, Guangzhou Medical University - State Key Laboratory of Respiratory Disease, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Beijing Key Tech Statistics Technology Co., Ltd., affiliation not provided to SSRN, affiliation not provided to SSRN and affiliation not provided to SSRN