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- Title
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).
- 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
- Abstract
We estimate the effectiveness of a fourth dose booster of coronavirus disease 2019 mRNA vaccine in individuals aged ≥60 years during Omicron BA.2 and BA.5 circulation in Korea. The effectiveness against critical infection was 67.7% (95% confidence interval, 50.7%–78.8%) at 31–60 days and 62.1% (95% confidence interval, 45.5%–73.7%) at 61–90 days.
- Publication
Open Forum Infectious Diseases, 2023, Vol 10, Issue 3, p1
- ISSN
2328-8957
- Publication type
Article
- DOI
10.1093/ofid/ofad109