Tags

Type your tag names separated by a space and hit enter

Contact-adjusted Immunity Levels against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity.
J Korean Med Sci. 2021 Oct 04; 36(38):e272.JK

Abstract

The proportion of population vaccinated cannot be directly translated into the herd immunity. We have to account for the age-stratified contact patterns to calculate the population immunity level, since not every individual gathers evenly. Here, we calculated the contact-adjusted population immunity against severe acute respiratory syndrome coronavirus 2 in South Korea using age-specific incidence and vaccine uptake rate. We further explored options to achieve the theoretical herd immunity with age-varying immunity scenarios. As of June 21, 2021, when a quarter of the population received at least one dose of a coronavirus disease 2019 (COVID-19) vaccine, the contact-adjusted immunity level was 12.5% under the social distancing level 1. When 80% of individuals aged 10 years and over gained immunity, we could achieve a 58.2% contact-adjusted immunity level. The pros and cons of vaccinating children should be weighed since the risks of COVID-19 for the young are less than the elderly, and the long-term safety of vaccines is still obscure.

Authors+Show Affiliations

Department of Internal Medicine, National Cancer Center, Goyang, Korea. June.y.chun@gmail.com.Department of Statistics, Seoul National University, Seoul, Korea.Department of Statistics, Seoul National University, Seoul, Korea. ydkim0903@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34609093

Citation

Chun, June Young, et al. "Contact-adjusted Immunity Levels Against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity." Journal of Korean Medical Science, vol. 36, no. 38, 2021, pp. e272.
Chun JY, Jeong H, Kim Y. Contact-adjusted Immunity Levels against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity. J Korean Med Sci. 2021;36(38):e272.
Chun, J. Y., Jeong, H., & Kim, Y. (2021). Contact-adjusted Immunity Levels against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity. Journal of Korean Medical Science, 36(38), e272. https://doi.org/10.3346/jkms.2021.36.e272
Chun JY, Jeong H, Kim Y. Contact-adjusted Immunity Levels Against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity. J Korean Med Sci. 2021 Oct 4;36(38):e272. PubMed PMID: 34609093.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contact-adjusted Immunity Levels against SARS-CoV-2 in Korea and Prospects for Achieving Herd Immunity. AU - Chun,June Young, AU - Jeong,Hwichang, AU - Kim,Yongdai, Y1 - 2021/10/04/ PY - 2021/07/04/received PY - 2021/09/26/accepted PY - 2021/10/5/entrez PY - 2021/10/6/pubmed PY - 2021/10/15/medline KW - COVID-19 KW - Herd Immunity KW - Republic of Korea KW - SARS-CoV-2 SP - e272 EP - e272 JF - Journal of Korean medical science JO - J Korean Med Sci VL - 36 IS - 38 N2 - The proportion of population vaccinated cannot be directly translated into the herd immunity. We have to account for the age-stratified contact patterns to calculate the population immunity level, since not every individual gathers evenly. Here, we calculated the contact-adjusted population immunity against severe acute respiratory syndrome coronavirus 2 in South Korea using age-specific incidence and vaccine uptake rate. We further explored options to achieve the theoretical herd immunity with age-varying immunity scenarios. As of June 21, 2021, when a quarter of the population received at least one dose of a coronavirus disease 2019 (COVID-19) vaccine, the contact-adjusted immunity level was 12.5% under the social distancing level 1. When 80% of individuals aged 10 years and over gained immunity, we could achieve a 58.2% contact-adjusted immunity level. The pros and cons of vaccinating children should be weighed since the risks of COVID-19 for the young are less than the elderly, and the long-term safety of vaccines is still obscure. SN - 1598-6357 UR - https://www.unboundmedicine.com/medline/citation/34609093/Contact_adjusted_Immunity_Levels_against_SARS_CoV_2_in_Korea_and_Prospects_for_Achieving_Herd_Immunity_ L2 - https://jkms.org/DOIx.php?id=10.3346/jkms.2021.36.e272 DB - PRIME DP - Unbound Medicine ER -