Presumed population immunity to SARS-CoV-2 in South Korea, April 2022.

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

SUBMITTER: Jang EJ 

PROVIDER: S-EPMC9633270 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature