- Presumed population immunity to SARS-CoV-2 in South Korea, April 2022
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Eun Jung Jang, Young June Choe, Seung Ah Choe, Yoo-Yeon Kim, Ryu Kyung Kim, Jia Kim, Do Sang Lim, Ju Hee Lee, Seonju Yi, Sangwon Lee, Young-Joon Park
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Osong Public Health Res Perspect. 2022;13(5):377-381. Published online October 14, 2022
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DOI: https://doi.org/10.24171/j.phrp.2022.0209
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 Graphical Abstract
 Abstract
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 - Objectives
We estimated the overall and age-specific percentages of the Korean population
with presumed immunity against severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) as of April 2022 using the national registry.
Methods
We used the national coronavirus disease 2019 (COVID-19) infection and vaccination
registry from South Korea, as described to define individuals with a previous history of
COVID-19 infection, vaccination, or both, as persons with presumed immunity.
Results
Of a total of 53,304,627 observed persons, 24.4% had vaccination and infection, 58.1%
had vaccination and no infection, 7.6% had infection and no vaccination, and 9.9% had no
immunity. The SARS-CoV-2 Omicron variant emerged at a time when the presumed population
immunity ranged from 80% to 85%; however, nearly half of the children were presumed to
have no immunity.
Conclusion
We report a gap in population immunity, with lower presumed protection in
children than in adults. The approach presented in this work can provide valuable informed
tools to assist vaccine policy-making at a national level.
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Citations
Citations to this article as recorded by  - Realistic Estimation of COVID-19 Infection by Seroprevalence Surveillance of SARS-CoV-2 Antibodies: An Experience From Korea Metropolitan Area From January to May 2022
In Hwa Jeong, Jong-Hun Kim, Min-Jung Kwon, Jayoung Kim, Hee Jin Huh, Byoungguk Kim, Junewoo Lee, Jeong-hyun Nam, Eun-Suk Kang
Journal of Korean Medical Science.2024;[Epub] CrossRef - Epidemiology of Coronavirus Disease 2019 in Infants and Toddlers, Seoul, South Korea
JiWoo Sim, Euncheol Son, Young June Choe
Pediatric Infection & Vaccine.2024; 31(1): 94. CrossRef - Predicting adherence to COVID-19 preventive measures among South Korean adults aged 40 to 69 Years using the expanded health empowerment model
Su-Jung Nam, Tae-Young Pak
SSM - Population Health.2023; 22: 101411. CrossRef - Acute COVID-19 in unvaccinated children without a history of previous infection during the delta and omicron periods
Jee Min Kim, Ji Yoon Han, Seung Beom Han
Postgraduate Medicine.2023; 135(7): 727. CrossRef
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