Effectiveness of Heterologous COVID-19 Vaccine Booster in Korean Elderly Population, 2022.

Seon Kyeong Park Young June Choe Eun Jung Jang Ryu Kyung Kim Sang-Won Lee Geun-Yong Kwon Jeeyeon Shin Sang-Yoon Choi Mi Jin Jeong Young Joon Park

Published in: Journal of Korean medical science (2023)

We conducted a cohort study to assess vaccine effectiveness (VE) of coronavirus disease 2019 vaccine combinations on severe acute respiratory syndrome coronavirus 2 critical infection and death among elderly population in Korea. From January to August 2022, VE against death for 4 doses mRNA recipients was 96.1%, whereas 1-dose viral vector + 3-dose mRNA recipients had VE of 90.8%.

Keyphrases

coronavirus disease
respiratory syndrome coronavirus
sars cov
randomized controlled trial
systematic review
middle aged
binding protein