1. Is the fourth COVID-19 vaccine dose urgently needed? Revelation from a prospective cohort study. Issue 3 (September 2022) Authors: Xu, Qiu-Yan; Li, Qiu-Ling; Jia, Zhi-Juan; Wu, Meng-Juan; Liu, Yan-Yun; Lin, Li-Rong; Liu, Li-Li; Yang, Tian-Ci Journal: Journal of infection Issue: Volume 85:Issue 3(2022) Page Start: e66 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗