J Korean Med Sci.  2023 May;38(19):e143. 10.3346/jkms.2023.38.e143.

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

Affiliations
  • 1Korea Disease Control and Prevention Agency, Cheongju, Korea
  • 2Korea University Anam Hospital and Allergy and Immunology Center, Korea University, Seoul, Korea

Abstract

We conducted a cohort study to assess vaccine effectiveness (VE) of coronavirus disease 2019 vaccine combinations on severe acute respirator y syndrome coronavirus 2 critical infection and death among elderly population in Korea. From Januar y 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%.

Keyword

COVID-19; SARS-CoV-2; Coronavirus; Elderly

Figure

  • Fig. 1 Effectiveness of different combination of coronavirus disease 2019 mRNA vaccine in elderly population during omicron circulation against (A) critical infection, and (B) death.VE = vaccine effectiveness.


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