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Asymptomatic Middle East Respiratory Syndrome coronavirus infection using a serologic survey in Korea
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Yeong-jun Song, Jeong-Sun Yang, Hee Jung Yoon, Hae-Sung Nam, Soon Young Lee, Hae-Kwan Cheong, Woo-Jung Park, Sung Han Park, Bo Youl Choi, Sung Soon Kim, Moran Ki
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Epidemiol Health. 2018;40:e2018014. Published online April 15, 2018
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DOI: https://doi.org/10.4178/epih.e2018014
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Abstract
OBJECTIVES The rates of asymptomatic infection with Middle East Respiratory Syndrome (MERS) coronavirus vary. A serologic study was conducted to determine the asymptomatic MERS infection rate in healthcare workers and non-healthcare workers by exposure status.
METHODS Study participants were selected from contacts of MERS patients based on a priority system in 4 regions strongly affected by the 2015 MERS outbreak. A sero-epidemiological survey was performed in 1,610 contacts (average duration from exposure to test, 4.8 months), and the collected sera were tested using an enzyme-linked immunespecific assay (ELISA), immunofluorescence assay (IFA), and plaque reduction neutralization antibody test (PRNT). Among the 1,610 contacts, there were 7 ELISA-positive cases, of which 1 exhibited positive IFA and PRNT results.
RESULTS The asymptomatic infection rate was 0.060% (95% confidence interval, 0.002 to 0.346). The asymptomatic MERS case was a patient who had been hospitalized with patient zero on the same floor of the hospital at the same time. The case was quarantined at home for 2 weeks after discharge, and had underlying diseases, including hypertension, angina, and degenerative arthritis.
CONCLUSIONS The asymptomatic infection was acquired via healthcare-associated transmission. Thus, it is necessary to extend serologic studies to include inpatient contacts who have no symptoms.
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Summary
Korean summary
2015년 국내 MERS 유행시에 자가격리를 시행하였던 접촉자 약 15,000명 (의료인과 비의료인 포함) 중에서 주요 유행지역, 노출 강도 등을 고려하여 선별된 3,291명을 대상으로 무증상 감염여부를 확인하기 위한 혈청 역학조사를 수행하였다. 최종 검사에 참여한 1,610명 중에서 7명이 ELISA 양성 반응을 보였고, 그 중 1명이 IFA와 PRNT에서도 양성 반응을 보여 무증상 감염률은 0.060%(95% CI: 0.002-0.346)로 기존 연구에 비하여 낮았다. 최종 양성을 보인 1명은 노출 당시 1번환자와 가까운 병실에 입원하였던 환자였다.
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Citations
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- MERS-CoV seroconversion amongst Malaysian Hajj pilgrims returning from the Middle East, 2016–2018: results from the MERCURIAL multiyear prospective cohort study
Jefree Johari, Robert D. Hontz, Brian L. Pike, Tupur Husain, Norhayati Rusli, Rozainanee Mohd-Zain, Vunjia Tiong, Hai-Yen Lee, Boon-Teong Teoh, Sing-Sin Sam, Chee-Sieng Khor, Shih-Keng Loong, Juraina Abd-Jamil, Siti-Sarah Nor'e, Hasmawati Yahaya, Naim Che Emerging Microbes & Infections.2023;[Epub] CrossRef - Rapid diagnostics of coronavirus disease 2019 in early stages using nanobiosensors: Challenges and opportunities
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Le Minh Bui, Huong Thi Thu Phung, Thuy-Tien Ho Thi, Vijai Singh, Rupesh Maurya, Khushal Khambhati, Chia-Ching Wu, Md Jamal Uddin, Do Minh Trung, Dinh Toi Chu Bioengineered.2021; 12(1): 8594. CrossRef - Seroprevalence of MERS-CoV in healthy adults in western Saudi Arabia, 2011–2016
Afnan A. Degnah, Sawsan S. Al-amri, Ahmed M. Hassan, Abdulrahman S. Almasoud, Manar Mousa, Sarah A. Almahboub, Rowa Y. Alhabbab, Ahmed A. Mirza, Salwa I. Hindawi, Naif Khalaf Alharbi, Esam I. Azhar, Anwar M. Hashem Journal of Infection and Public Health.2020; 13(5): 697. CrossRef - Characterization of a human monoclonal antibody generated from a B-cell specific for a prefusion-stabilized spike protein of Middle East respiratory syndrome coronavirus
Jang-Hoon Choi, Hye-Min Woo, Tae-young Lee, So-young Lee, Sang-Mu Shim, Woo-Jung Park, Jeong-Sun Yang, Joo Ae Kim, Mi-Ran Yun, Dae-Won Kim, Sung Soon Kim, Yi Zhang, Wei Shi, Lingshu Wang, Barney S. Graham, John R. Mascola, Nanshuang Wang, Jason S. McLella PLOS ONE.2020; 15(5): e0232757. CrossRef - Asymptomatic infection by SARS-CoV-2 in healthcare workers: A study in a large teaching hospital in Wuhan, China
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Jaffar A. Al-Tawfiq, Philippe Gautret Travel Medicine and Infectious Disease.2019; 27: 27. CrossRef - Airflow analysis of Pyeongtaek St Mary's Hospital during hospitalization of the first Middle East respiratory syndrome patient in Korea
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Sibylle Bernard-Stoecklin, Birgit Nikolay, Abdullah Assiri, Abdul Aziz Bin Saeed, Peter Karim Ben Embarek, Hassan El Bushra, Moran Ki, Mamunur Rahman Malik, Arnaud Fontanet, Simon Cauchemez, Maria D. Van Kerkhove Scientific Reports.2019;[Epub] CrossRef - Single intranasal immunization with chimpanzee adenovirus-based vaccine induces sustained and protective immunity against MERS-CoV infection
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Prevalence of fungal infections using National Health Insurance data from 2009-2013, South Korea
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Hee Jung Yoon, Hwa Young Choi, Young Kwon Kim, Yeong Jun Song, Moran Ki
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Epidemiol Health. 2014;36:e2014017. Published online September 11, 2014
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DOI: https://doi.org/10.4178/epih/e2014017
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25,371
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25
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Abstract
OBJECTIVES The symptoms of fungal infections vary from minor to severe. According to recent reports, fungal infection prevalence is increasing due to increases in the aging population and in patients with compromised immune systems. However, the total prevalence of fungal infections in South Korea is unknown. We investigated the recent 5-year prevalence of each type of fungal infection in South Korea across age, sex, and regional groups.
METHODS Nationwide data from the National Health Insurance of South Korea were used. The target population included patients who had received treatment for a fungal infection that was listed as the main disease. For each patient, multiple treatments were counted as one case per year in the data analysis.
RESULTS The annual prevalence of all-type mycoses increased from 6.9% in 2009 to 7.4% in 2013. Among the specific groups, the prevalence of dermatophytosis was highest (5.2%), followed by that of opportunistic mycoses (1.7%) and superficial mycoses (0.2%). The prevalence of subcutaneous mycoses and generalized mycoses was very low (8 cases per 100,000 persons and 3 cases per 1 million persons, respectively).
CONCLUSIONS Every year, approximately 7.1% of the Korean population receives treatment for fungal diseases. Cases of opportunistic mycoses are assumed to increase each year. Therefore, further research is needed to understand and monitor the prevalence of mycoses to establish management policies to reduce the burden of fungal diseases.
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Summary
Korean summary
2009-2013년도 한국의 건강보험자료를 활용하여 진균 종류별로 연령별, 성별, 지역별 유병률을 검토하였다. 그 결과 한국 인구의 약 7.1%가 매년 진균 질환으로 치료를 받고 있는 것으로 나타났다. 특히 기회감염 진균증의 연도별 증가 양상이 관찰되었다. 진균증 유병률에 대한 이해와 관심이 필요하며 이를 토대로 진균 질환 관리 정책 수립이 필요하다.
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The Prevalence Rate of Fatty Liver and Its Risk Factors of Adult Women in a Rural Area.
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June Young Suh, Byung Yeol Chun, Hee Jung Yoon, Kyung Eun Lee, Sam Soon Lee
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Korean J Epidemiol. 2003;25(2):100-107.
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Abstract
PURPOSE To investigate the prevalence rate of fatty liver disease and its related factors of women in rural area.METHODS Seven hundreds and fifty four adult females (above age 30) at eleven Community Health Centers in Koryung County were recruited from 3 March 2001 to 30 May 2001. Abdominal ultrasonography, height, weight, and blood pressure were measured. A questionnaire interviewing method was used to collect life style data.RESULTS The prevalence of fatty liver disease was 13.4%. By simple analysis, age(p<0.05), diabetes mellitus(p<0.01), salt intake(p<0.05), and obesity (p<0.01) were significantly associated with fatty liver disease. In multiple logistic regression analysis, the risk for fatty liver in above 50 age group was 2.7 (95% CI: 1.25-5.99) times higher than that in 30-49 age group, overweight was 10.3 (95% CI: 5.26-19.99) times higher than normal group, 3.9 times (95% CI: 1.84-8.38) higher in person with diabetes mellitus than those without and the risk of current drinkers was 2.0 times (95% CI: 1.03-3.85) higher than non-drinkers.CONCLUSION Above findings suggested that risk factors significantly related with fatty liver were age, BMI, diabetes mellitus, and drinking in adult women.
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