1. Effectiveness of A Fourth Dose of COVID-19 mRNA Vaccine in the Elderly Population During the Omicron BA.2 and BA.5 Circulation: A Nationwide Cohort Study in Korea (K-COVE). (1st March 2023) Authors: Park, Seon Kyeong; Choe, Young June; Jang, Eun Jung; Kim, Ryu Kyung; Lim, Do-Sang; Yi, Seonju; Lee, Sangwon; Kwon, Geun-Yong; Shin, Jee Yeon; Choi, Sang-Yoon; Jeong, Mi Jin; Park, Young-Joon Journal: Open forum infectious diseases Issue: Volume 10:Number 3(2023) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗