Epidemiology and Health

COVID-19: Original Article

Seroprevalence of SARS-CoV-2 antibodies in the community based on participants in the 2020 Korea National Health and Nutrition Examination Survey: Ah-Ra Kim, Dohsik Minn, Su Hwan Kim, Hyeon Nam Do, Byoungguk Kim, Young Sill Choi, Dong-Hyun Kim, Eun-Jee Oh, Kyungwon Oh, Donghyok Kwon, Jun-Wook Kwon, Sung Soon Kim, June-Woo Lee; Epidemiol Health. 2022;44:e2022028. Published online February 21, 2022; DOI: https://doi.org/10.4178/epih.e2022028

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Abstract

OBJECTIVES
The Korea National Health and Nutrition Examination Survey (KNHANES) is a nationwide cross-sectional surveillance system that assesses the health and nutritional status of the Korean population. To evaluate the occurrence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the community, we investigated the prevalence of anti-SARS-CoV-2 antibodies in the sera of KNHANES participants.

METHODS

Subjects were recruited between April 24 and December 12, 2020. In total, 5,284 subjects aged 10-90 years from 17 regions participated. SARS-CoV-2 antibodies were screened using the Elecsys Anti-SARS-CoV-2 assay. Positive samples were verified using 4 different SARS-CoV-2 antibody assays and the plaque reduction neutralizing test. The final seropositivity criteria were a positive screening test and at least 1 positive result from the 5 additional tests.

RESULTS

Almost half (49.2%; 2,600/5,284) of participants were from metropolitan areas, 48.9% were middle-aged (40-69 years), and 20.5% were in their 20s or younger. The seropositivity rate was 0.09% (5/5,284). Three of the 5 antibody-positive subjects had a history of infection, of whom 2 were infected abroad and 1 was infected in a local cluster outbreak.

CONCLUSIONS

The low SARS-CoV-2 antibody seroprevalence in Korea indicates that there have been few coronavirus disease 2019 (COVID-19) cases due to successful COVID-19 management measures (e.g., diagnostic tests for overseas arrivals, national social distancing, and strict quarantine measures). Moreover, asymptomatic infections were uncommon due to active polymerase chain reaction testing. However, hidden infections may exist in the community, requiring the continuation of quarantine and vaccination measures.

Summary

Korean summary
코로나19에 대한 방역대책 및 예방접종 정책 수립을 위한 과학적 근거를 확보하기 위하여 2020년도 국민건강영양조사(이하 국건영) 참여자 5,284명에 대해 코로나19 항체보유율을 조사함. 그 결과 2020년도 국건영 참여자의 항체양성률은 0.09%(5/5,284)였으며, 이중 확진 이력이 있는 사람은 3명이었음. 따라서 지역사회 미진단 감염자는 2명으로 확인됨. 국내 항체보유율은 해외 사례에 비해 낮으며, 이는 적극적인 방역관리에 따른 것으로 사료되며, 지역사회에 미진단 감염자가 존재함이 확인되어 이들에 대한 철저한 관리가 요구됨.

Key Message
The low SARS-CoV-2 antibody seroprevalence in Korea indicates that there have been few COVID-19 cases due to successful management measures, however, hidden infections may exist in the community, requiring the continuation of quarantine and vaccination measures.

Citations

Citations to this article as recorded by

Protective effect of vaccination on the risk of cardiovascular disease after SARS-CoV-2 infection
Jihun Song, Seulggie Choi, Seogsong Jeong, Joo young Chang, Sun Jae Park, Yun Hwan Oh, Ji Soo Kim, Yoosun Cho, Kyeonghyang Byeon, Jun Yong Choi, Seju Lee, Sang Min Park
Clinical Research in Cardiology.2024; 113(2): 235. CrossRef
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
Accelerated Cognitive Function Decline in Community-Dwelling Older Adults during COVID-19 Pandemic: The Korean Frailty and Aging Cohort Study (KFACS)
Jaehoon Jung, Sunyoung Kim, Byungsung Kim, Miji Kim, Jisoo Yang, Dongmin Chung, Changwon Won
International Journal of Environmental Research and Public Health.2022; 19(17): 10666. CrossRef
Seroprevalence of SARS-CoV-2 antibodies during the third wave of COVID-19 in the Seoul metropolitan area of Korea
Kyuhyun Yoon, Jayeun Kim, Kyong Ran Peck, Hyun Soo Kim, Hyukmin Lee, Yoo-Sung Hwang, Soon Young Lee, Sung-il Cho, Hun Jae Lee, Yeong-gyeong Kim, Byoungguk Kim, June-Woo Lee, Ah-Ra Kim, Hyeon Nam Do, Dong-Hyun Kim
Epidemiology and Health.2022; 44: e2022085. CrossRef

Methods

The causality between smoking and lung cancer among groups and individuals: addressing issues in tobacco litigation in South Korea: Young-Ho Khang; Epidemiol Health. 2015;37:e2015026. Published online May 31, 2015; DOI: https://doi.org/10.4178/epih/e2015026

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Abstract Summary PDF Supplementary Material

Abstract

This article discusses issues on the causality between smoking and lung cancer, which have been raised during the tobacco litigation in South Korea. It should be recognized that the explanatory ability of risk factor(s) for inter-individual variations in disease occurrence is different from the causal contribution of the risk factor(s) to disease occurrence. The affected subjects of the tobacco litigation in South Korea are lung cancer patients with a history of cigarette smoking. Thus, the attributable fraction of the exposed rather than the population attributable fraction should be used in the tobacco litigation regarding the causal contribution of smoking to lung cancer. Scientific evidence for the causal relationship between smoking and lung cancer is based on studies of individuals and groups, studies in animals and humans, studies that are observational or experimental, studies in laboratories and communities, and studies in both underdeveloped and developed countries. The scientific evidence collected is applicable to both groups and individuals. The probability of causation, which is calculated based on the attributable fraction for the association between smoking and lung cancer, could be utilized as evidence to prove causality in individuals.

Summary

Korean summary
이 글에서는 우리나라 담배소송 과정에서 제기된 흡연과 폐암의 인과성에 대하여 논하였다. 질병 발생의 개인 간 변이에 대한 위험 요인의 설명력과 질병발생에 미치는 위험요인의 인과적 기여도는 다르다는 점을 지적하였다. 개인에서의 흡연과 폐암의 인과성에 대한 정보로 인과확률이 활용될 수 있음을 강조하였다.

Citations

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A different causal perspective with Necessary Condition Analysis
Jan Dul
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Jun-Pyo Myong, Hyeongsu Kim, Kunsei Lee, Soung Hoon Chang
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Tobacco and epidemiology in Korea: old tricks, new answers?
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Journal of Epidemiology and Community Health.2016; 70(6): 527. CrossRef

Original Article

The effect of community-level smoke-free ordinances on smoking rates in men based on Community Health Surveys: Hye Ah Lee, Hyesook Park, Ho Kim, Kyunghee Jung-Choi; Epidemiol Health. 2014;36:e2014037. Published online December 26, 2014; DOI: https://doi.org/10.4178/epih/e2014037

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
As one of smoke-free policies, communities have established the smoke-free ordinances since August 2010. Thus, this study aimed to evaluate the effects of community-level smoke-free ordinances (SFO) on smoking rates in men using multiyear Community Health Survey (CHS) data.

METHODS

Data on community-level SFO were collected from a website on Enhanced Local Laws and Regulation Information System. Regional smoking-related data were obtained from CHS data from 2008 to 2012 and the age-standardized rates of current smoking in men, attempts to quit smoking, and smoke-free campaign experiences including the mean number of cigarettes smoked (smoking amount) were calculated. Repeated measures analysis of variance was performed to evaluate the effects of regional implementation of SFO and the duration on change of smoking rates.

RESULTS

Overall current smoking rates and daily mean cigarettes smoked were lower in community where SFO had been implemented compared to those without implementation, and there was a significant difference in smoking rates between 2010 and 2008. Cross-sectional analysis of the effects of regional SFO revealed clear difference in rate of current smoking, but longitudinal analysis showed no significant differences. Stratifying by age groups, however, showed that groups less than 30 years of age had low smoking rates in community with ordinance compared to those without SFO since 2010. Yearly surveys measuring the number of cigarettes smoked, attempts to quit smoking, and experiences of smoke-free campaigns showed regional differences in the duration of implementation, but these differences were not significant in longitudinal analysis. Furthermore, there was a difference in regional socioeconomic characteristics between community with and without SFO implementation.

CONCLUSIONS

For effective smoking control, it is necessary to evaluate current policies and develop indices to evaluate the practical implementation of ordinances. As more communities to pass the SFO, long-term observation and assessments required.

Summary

Korean summary
2008년부터 2012년까지 조사된 지역사회건강조사 자료를 이용하여, 지역별 금연 조례 시행에 대한 효과를 평가한 연구 결과로, 종단적 분석을 통해 접근하였을 때 시간에 따른 흡연율 감소 폭은 조례 시행/미시행 지역간에 차이를 보이지 않았으며, 지역의 사회경제적 특성 요인에 차이가 존재하는 것으로 나타났다. 효과적인 흡연 규제를 위해, 현 시행중인 정책에 대한 효과 평가 및 장기적인 평가가 필요하다.

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Effects of municipal smoke-free ordinances on secondhand smoke exposure in the Republic of Korea
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What explains the link between childhood ADHD and adolescent depression? Investigating the role of peer relationships and academic attainment
Victoria Powell, Lucy Riglin, Gemma Hammerton, Olga Eyre, Joanna Martin, Richard Anney, Anita Thapar, Frances Rice
European Child & Adolescent Psychiatry.2020; 29(11): 1581. CrossRef
Attitudes of Korean smokers towards smoke-free public places: findings from the longitudinal ITC Korea Survey, 2005–2010
Eunja Park, Sung-il Cho, Hong Gwan Seo, Yeol Kim, Hyun-Suk Jung, Pete Driezen, Janine Ouimet, Anne C K Quah, Geoffrey T. Fong
BMJ Open.2019; 9(8): e025298. CrossRef
Second‐hand smoke prevalence in 252 regions of South Korea in three exposure locations
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Japan Journal of Nursing Science.2018; 15(3): 210. CrossRef
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Hye Ah Lee, Hyejin Han, Seonhwa Lee, Bomi Park, Bo Hyun Park, Won Kyung Lee, Ju Ok Park, Sungok Hong, Young Taek Kim, Hyesook Park
BMC Public Health.2018;[Epub] CrossRef
The Potential Roles of Extracellular Vesicles in Cigarette Smoke-Associated Diseases
A-Reum Ryu, Do Hyun Kim, Eunjoo Kim, Mi Young Lee
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Affecting Factors of Secondhand Smoke Exposure in Korea: Focused on Different Exposure Locations
Li-Yuan Sun, Hae-Kwan Cheong, Eun-Whan Lee, Kyeong-Jin Kang, Jae-Hyun Park
Journal of Korean Medical Science.2016; 31(9): 1362. CrossRef

Health Statistics

Trends in cigarette smoking among adolescents and adults in South Korea: Sunhye Choi, Yoonjung Kim, Suyeon Park, Jihye Lee, Kyungwon Oh; Epidemiol Health. 2014;36:e2014023. Published online October 28, 2014; DOI: https://doi.org/10.4178/epih/e2014023

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Abstract Summary PDF Supplementary Material

Abstract

This report is to examine changes in the smoking prevalence among adults and adolescents and provide basic data for national health policies. Korea National Health and Nutrition Examination Survey from 1998 to 2013 and Korea Youth Risk Behavior Web-based Survey from 2005 to 2013 were used to estimate national adults and adolescents smoking prevalence. In 2013, current cigarette smoking prevalence among male adults and female adults was 42.1% and 6.2%, decreasing by 1.6% points and 1.7% points, respectively compared to 2012. Among adolescents, current cigarette smoking prevalence was 14.4% for male and 4.6% for female students, decreasing by 1.9%points and 1.3%points, respectively compared to 2012. The highest current cigarette smoking prevalence was observed among adults of lower household income or lower education level and among middle and high school students of lower perceived household economic status or lower perceived academic records. Current cigarette smoking prevalence among male adults has decreased since 2011, whereas among female adults, there were no statistically significant annual changes. Among middle and high school students, the prevalence for male students decreased since 2011 and for female students decreased since 2006. But the smoking prevalence did not meet the Health Plan 2020 target.

Summary

Korean summary
국민건강영양조사(1998~2013)와 청소년건강행태온라인조사(2005~2013) 원시자료를 이용하여 분석한 결과, 2013년 현재흡연율은 성인의 경우 남자 42.1%, 여자 6.2%, 중고등학생은 남자 14.4%, 여자 4.6%이었다. 사회경제적요인별로는 성인의 경우 소득수준이 낮을수록, 교육수준이 낮을수록 현재흡연율이 높았고, 중고등학생은 주관적 가정의 경제적 상태가 낮을수록, 주관적 학업성적이 낮을수록 흡연율이 높았다.

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