Is the fourth COVID-19 vaccine dose urgently needed? Revelation from a prospective cohort study

Affiliations

• ¹ Centre of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, China.
• ² Xiamen Boson Biotech Co., Ltd, Xiamen, China.
• ³ Centre of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, China. Electronic address: linlirong@xmu.edu.cn.
• ⁴ Centre of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, China. Electronic address: liulili@xmu.edu.cn.
• ⁵ Centre of Clinical Laboratory, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China; Institute of Infectious Disease, School of Medicine, Xiamen University, Xiamen, China. Electronic address: yangtianci@xmu.edu.cn.