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4 "Jaehun Jung"
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Original article
Perceived usefulness of COVID-19 tools for contact tracing among contact tracers in Korea
Seonyeong Gong, Jong Youn Moon, Jaehun Jung
Epidemiol Health. 2022;e2022106.   Published online November 15, 2022
DOI: https://doi.org/10.4178/epih.e2022106    [Accepted]
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AbstractAbstract
Abstract
Objectives
In Korea, contact tracing for coronavirus disease 2019 is conducted using the information from credit card records, handwritten visitor logs, KI-Pass (QR code), and Safe Call after an interview. We aimed to assess the usefulness of these tools for contact tracing.
Methods
The 2 months (July to September 2021) long anonymous online survey was conducted. Contact tracers from throughout Korea were included as the participants. The questionnaire consisted of 4 parts: 1) demographic characteristics, 2) usefulness of each tool for contact tracing, 3) order in which information is checked during contact tracing, and 4) match rate between tools for contact tracing, screening test rate, response rate, and helpfulness (rated on a Likert scale).
Results
A total of 190 individuals participated in the survey. When asked to rate the usefulness of each tool for contact tracing on a Likert scale, most respondents (86%) provided positive response for “credit card records”, while the most common response for “handwritten visitor logs” was negative. The actual helpfulness of positive response was KI-Pass (91%), Credit card records (83%), Safe Call (78%), and Handwritten visitor logs (22%).
Conclusions
Over 80% of participants provided positive responses to credit card records, KI-Pass, and Safe Call data, while approximately 50% provided negative responses regarding the usefulness of handwritten visitor logs. Our findings highlight the need to unify systems for contact tracing performed after an interview to increase their convenience for contact tracers, as well as the need to improve tools that utilize handwritten visitor logs for digitally vulnerable groups.
Summary
Korean summary
Key Message
Review paper
Monkeypox: the resurgence of forgotten things
Sun Bean Kim, Jaehun Jung, Kyong Ran Peck
Epidemiol Health. 2022;e2022082.   Published online September 26, 2022
DOI: https://doi.org/10.4178/epih.e2022082    [Accepted]
  • 779 View
  • 84 Download
AbstractAbstract PDF
Abstract
Monkeypox, a rare zoonotic disease, is prevalent primarily in Central and Western Africa. However, as the 2022 monkeypox outbreak is the first incidence of widespread community transmission outside Africa, monkeypox is emerging as a worldwide concern. Monkeypox is caused by the monkeypox virus, which belongs to the genus orthopoxvirus and presents as a vesicular-pustular disease that may be preceded by fever, malaise, and other constitutional symptoms. If present, lymphadenopathy may distinguish it from chickenpox or smallpox. However, contrary to previous manifestations, most monkeypox patients presented with atypical features during the 2022 outbreak. Monkeypox is usually a self-limiting disease with symptoms lasting between 2 and 4 weeks and is mainly transmitted when a person is in contact with an infected animal, person, or fomites contaminated with the virus. Very few treatment options are available for treating this disease. Tecovirimat has been licensed in some countries for the treatment of smallpox and monkeypox infections. Two other medications, cidofovir and brincidofovir, were effective against poxviruses in in vitro and animal studies, but data on human cases of monkeypox are limited. Although Imvamune (JYNNEOS), a vaccine against monkeypox, is authorized in the United States, there are currently no established routine vaccination programs. Current preventive strategies focus on the detection of probable cases and containment of the outbreak through the implementation of selected ring vaccination programs. Fundamental principles to prevent the spread of monkeypox, including maintaining personal hygiene and avoiding close contact with symptomatic patients, are of paramount importance.
Summary
Korean summary
Key Message
COVID-19: Original Article
Predictors of COVID-19 booster vaccine hesitancy among fully vaccinated adults in Korea: a nationwide cross-sectional survey
Yunha Noh, Ju Hwan Kim, Dongwon Yoon, Young June Choe, Seung-Ah Choe, Jaehun Jung, Sang-Won Lee, Ju-Young Shin
Epidemiol Health. 2022;44:e2022061.   Published online July 22, 2022
DOI: https://doi.org/10.4178/epih.e2022061
  • 2,745 View
  • 266 Download
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
This study explored predictors of coronavirus disease 2019 (COVID-19) booster hesitancy among fully vaccinated young adults and parental COVID-19 vaccine hesitancy for their children.
METHODS
This cross-sectional study administered an online survey from December 2 to December 20, 2021. We enrolled participants aged 18-49 years, for whom ≥2 weeks had passed after their initial COVID-19 vaccination. We estimated odds ratios (ORs) with 95% confidence intervals (CIs) using multivariate logistic regression to evaluate factors associated with booster/vaccine hesitancy.
RESULTS
Among the 2,993 participants, 48.8% showed hesitancy (wait and see: 40.2%; definitely not: 8.7%). Booster hesitancy was more common among women (OR, 1.25; 95% CI, 1.05 to 1.50), younger people (OR, 1.44; 95% CI, 1.17 to 1.77), those with a lower education level (OR, 2.05; 95% CI, 1.10 to 3.82), those who received the mRNA-1273 vaccine type (OR, 2.01; 95% CI, 1.65 to 2.45), and those who experienced serious adverse events following previous COVID-19 vaccination (OR, 2.03; 95% CI, 1.47 to 2.80). The main reasons for booster hesitancy were concerns about safety (54.1%) and doubts about efficacy (29.8%). Among the 1,020 respondents with children aged <18 years, 65.8% were hesitant to vaccinate their children against COVID-19; hesitancy was associated with younger parental age, education level, the type of vaccine the parent received, and a history of COVID-19 infection.
CONCLUSIONS
Concerns about the efficacy and safety of COVID-19 vaccines were the major barrier to booster acceptance. The initial COVID-19 vaccine type (mRNA-1273), young age, gender (women), a low education level, and adverse events after the first COVID-19 vaccine were key predictors of booster hesitancy.
Summary
Korean summary
본 연구는 국내 19-49세 성인을 대상으로, 코로나19 3차접종 의향과 그들의 18세 미만 자녀에 대한 코로나19 기초접종 의향을 조사하고, 코로나19 백신접종 기피와 관련된 요인을 파악하고자 하였다. 2021년 12월 2일부터 20일까지 온라인 설문조사를 통하여 자료를 수집하였으며, 연구대상자는 코로나19 기초접종을 완료한 후 2주 경과한 19-49세 성인으로, 전국 대표성을 확보하기 위해 성별, 연령, 지역별로 층화하여 모집하였다. 코로나19 3차접종 기피율은 약 48.8%로 나타났으며, 접종 기피 관련 영향요인으로는 젊은 연령층, 여성, 낮은 교육수준, 기초접종 백신 종류, 기초접종 후 중증 이상반응 경험이 포함되었으며, 18세 미만 자녀에 대한 코로나19 기초접종 기피율은 65.8%로, 관련 영향요인으로는 젊은 부모 연령, 교육수준, 부모의 기초접종 백신 종류, 코로나19 감염 과거력이 포함되었다.
Key Message
Concerns about the safety and efficacy of COVID-19 vaccines were the major barrier to booster acceptance; the initial COVID-19 vaccine type (mRNA-1273), younger age, gender (women), a low education level, and adverse events after the first COVID-19 vaccine were key predictors of booster hesitancy.
COVID-19: Original Article
Model-based cost-effectiveness analysis of oral antivirals against SARS-CoV-2 in Korea
Youngji Jo, Sun Bean Kim, Munkhzul Radnaabaatar, Kyungmin Huh, Jin-Hong Yoo, Kyong Ran Peck, Hojun Park, Jaehun Jung
Epidemiol Health. 2022;44:e2022034.   Published online March 12, 2022
DOI: https://doi.org/10.4178/epih.e2022034
  • 6,183 View
  • 546 Download
  • 8 Citations
AbstractAbstract AbstractSummary PDFSupplementary Material
Abstract
OBJECTIVES
Many countries have authorized the emergency use of oral antiviral agents for patients with mild-to-moderate cases of coronavirus disease 2019 (COVID-19). We assessed the cost-effectiveness of these agents for reducing the number of severe COVID-19 cases and the burden on Korea’s medical system.
METHODS
Using an existing model, we estimated the number of people who would require hospital/intensive care unit (ICU) admission in Korea in 2022. The treatment scenarios included (1) all adult patients, (2) elderly patients only, and (3) adult patients with underlying diseases only, compared to standard care. Based on the current health system capacity, we calculated the incremental costs per severe case averted and hospital admission for each scenario.
RESULTS
We estimated that 236,510 COVID-19 patients would require hospital/ICU admission in 2022 with standard care only. Nirmatrelvir/ritonavir (87% efficacy) was predicted to reduce this number by 80%, 24%, and 17% when targeting all adults, adults with underlying diseases, and elderly patients (25, 8, and 4%, respectively, for molnupiravir, with 30% efficacy). Nirmatrelvir/ritonavir use is likely to be cost-effective, with predicted costs of US$8,878, US$8,964, and US$1,454, per severe patient averted for the target groups listed above, respectively, while molnupiravir is likely to be less cost-effective, with costs of US$28,492, US$29,575, and US$7,915, respectively.
CONCLUSIONS
In Korea, oral treatment using nirmatrelvir/ritonavir for symptomatic COVID-19 patients targeting elderly patients would be highly cost-effective and would substantially reduce the demand for hospital admission to below the capacity of the health system if targeted to all adult patients instead of standard care.
Summary
Korean summary
본 연구는 감염병 수리모형을 바탕으로 두가지 항바이러스제의 (nirmatrelvir/ritonavir와 molnupiravir) 비용 효익을 평가하였다. 본 모델에 따르면, 2022년 한국에서, 현재 의료시스템의 수용한계를 넘는 코로나 19 대유행이 발생할 때, nirmatrelvir/ritonavir 를 코로나 감염 및 증상 있는 고령층 환자들을 대상으로 투여할 경우 높은 비용 효익이 기대되고 (중증환자 1명 감소효과에$1,454 비용소요), 성인 환자 대상으로 투여할 경우, (molnupiravir이나 nirmatrelvir/ritonavir를 투여하지 않는) 일반 치료에 비해서 전체 입원 수요를 80% 줄일 것으로 기대된다.
Key Message
Given an expected high epidemic resurgence in 2022 that could exceed South Korea’s current health system capacity, oral treatment using nirmatrelvir/ritonavir for symptomatic COVID-19 patients may be a highly cost-effective solution if targeted to elderly patients ($1,454 per severe case averted) and substantially reduce the demand for hospital admission (80%, 188,478 patients) below the capacity of the health system if targeted to all adult patients compared to standard care.

Citations

Citations to this article as recorded by  
  • Multi-Faceted Analysis of COVID-19 Epidemic in Korea Considering Omicron Variant: Mathematical Modeling-Based Study
    Youngsuk Ko, Victoria May Mendoza, Renier Mendoza, Yubin Seo, Jacob Lee, Jonggul Lee, Donghyok Kwon, Eunok Jung
    Journal of Korean Medical Science.2022;[Epub]     CrossRef
  • Adjusting non-pharmaceutical interventions based on hospital bed capacity using a multi-operator differential evolution
    Victoria May P. Mendoza, Renier Mendoza, Jongmin Lee, Eunok Jung
    AIMS Mathematics.2022; 7(11): 19922.     CrossRef
  • The Possible Impact of Nationwide Vaccination on Outcomes of the COVID-19 Epidemic in North Korea: A Modelling Study
    Sung-mok Jung, Jaehun Jung
    Journal of Korean Medical Science.2022;[Epub]     CrossRef
  • Impact of the Use of Oral Antiviral Agents on the Risk of Hospitalization in Community Coronavirus Disease 2019 Patients (COVID-19)
    Terry Cheuk Fung Yip, Grace Chung Yan Lui, Mandy Sze Man Lai, Vincent Wai Sun Wong, Yee Kit Tse, Bosco Hon Ming Ma, Elsie Hui, Maria K W Leung, Henry Lik Yuen Chan, David Shu Cheong Hui, Grace Lai Hung Wong
    Clinical Infectious Diseases.2022;[Epub]     CrossRef
  • Medications for early treatment of COVID ‐19 in Australia
    Adam Polkinghorne, James M Branley
    Medical Journal of Australia.2022;[Epub]     CrossRef
  • Comparative effectiveness of sotrovimab and molnupiravir for prevention of severe covid-19 outcomes in patients in the community: observational cohort study with the OpenSAFELY platform
    Bang Zheng, Amelia C A Green, John Tazare, Helen J Curtis, Louis Fisher, Linda Nab, Anna Schultze, Viyaasan Mahalingasivam, Edward P K Parker, William J Hulme, Sebastian C J Bacon, Nicholas J DeVito, Christopher Bates, David Evans, Peter Inglesby, Henry D
    BMJ.2022; : e071932.     CrossRef
  • Nirmatrelvir plus ritonavir in COVID-19: a profile of its use
    Hannah A. Blair
    Drugs & Therapy Perspectives.2022;[Epub]     CrossRef
  • Treatment Options for Patients With Mild-to-Moderate Coronavirus Disease 2019 in Korea
    Jaehyun Jeon, BumSik Chin
    Journal of Korean Medical Science.2022;[Epub]     CrossRef

Epidemiol Health : Epidemiology and Health