Presumed population immunity to SARS-CoV-2 in South Korea, April 2022.
Osong Public Health Res Perspect
; 13(5): 377-381, 2022 Oct.
Article
in English
| MEDLINE | ID: covidwho-2100733
ABSTRACT
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.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Prognostic study
Topics:
Vaccines
/
Variants
Language:
English
Journal:
Osong Public Health Res Perspect
Year:
2022
Document Type:
Article
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