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7 results on '"JiWoo Sim"'

1. Risk of Severe Acute Respiratory Syndrome Coronavirus 2 Transmission in Seoul, Korea.

Author

Jiwoo Sim, Euncheol Son, Minsu Kwon, Eun Jin Hwang, Young Hwa Lee, and Young June Choe

Subjects
*SARS-CoV-2, *CORONAVIRUS diseases, *INFECTIOUS disease transmission, *COVID-19, *COVID-19 pandemic, *LONG-term care facilities
Abstract

Background: The risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission during the endemic phase may vary from that during the previous pandemic phase. We evaluated the risk of infection in a general population with laboratory-confirmed coronavirus disease 2019 (COVID-19) in a community setting in Korea. Materials and Methods: This study included 1,286 individuals who had been in contact with an index COVID-19 case between January 24, 2020, and June 30, 2022. Variables such as age, sex, nationality, place of contact, level of contact, the status of exposed cases, period, and level of mask-wearing were assessed. Results: Among 1,286 participants, 132 (10.30%) were confirmed to have COVID-19. With increasing age, the risk of the exposed persons contracting COVID-19 from index cases tended to increase (P <0.001), especially for people in their 70s (odds ratio, 1.24; 95% confidence interval, 1.11–1.40; P <0.001). We found an increasing trend in the risk of a COVID-19 exposed case becoming a secondary infection case (P <0.001) in long-term care facilities where the attack rate was high. Conclusion: The risk of COVID-19 transmission is high in long-term care facilities where many older adults reside. Intensive management of facilities at risk of infection and strict mask-wearing of confirmed COVID-19 cases are necessary to prevent the risk of COVID-19 infection. [ABSTRACT FROM AUTHOR]

Published
2024
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2. A Review Study of Soft Electronic Materials for Epicardial Devices

Author

Jiwoo Sim, Sunny Kim, and Jong Wook Lee

Subjects
General Medicine
Abstract

Purpose: Heart failure is a widespread health concern. A person with a heart failure has 5 years shorter life expectancy compared to a person who has a cancer. Specifically, myocardial disease is usually involved with a treatment accompanied by an electrical conduction system. To alleviate the physical burden to heart due to ventricular pacing, epicardial electronic system made of soft and elastic materials is needed. Methodology: In this review, we discuss candidate materials for novel epicardial sensing/stimulation system that matches similar mechanical properties of heart. Materials are categorized as soft conductive materials consist of elastomer and conductive filler and tissue-like low modulus materials. Like hydrogel and its conductive composites. Main Findings: The soft nanocomposites integrated with nanomaterials as filler and elastomer/hydrogel as matrix show potential to open a new pathway in high-performance epicardial electronic system that improve accuracy, stability, and long-term usability in diagnosis and treatment of heart diseases. Implications: Multifunctional epicardial system that monitors electrical conduction of epicardium surface and stimulate epicardium simultaneously could be a powerful tool to diagnose and treat myocardial disease. Novelty: This review study is focused and written in simple terms for readers.

Published
2023

4. Reply to: SARS-CoV-2 Transmission Rate Depends on Infectivity of the Virus Strain, Closeness of Contact, and the Immune.

Author

Jiwoo Sim, Euncheol Son, and Young June Choe

Subjects
*SARS-CoV-2, *COVID-19 pandemic, *COVID-19, *LONG-term care facilities, *COMMUNICABLE diseases
Abstract

The article "Reply to: SARS-CoV-2 Transmission Rate Depends on Infectivity of the Virus Strain, Closeness of Contact, and the Immune" discusses the risk of SARS-CoV-2 transmission in Seoul, Korea, focusing on factors such as infectivity of the virus strain, contact intensity, and immune competence of infected individuals. The study acknowledges limitations in quantifying contact intensity and suggests the need for more detailed contact tracing methods to understand transmission risk better. The authors also address the potential role of animal transmission, noting the low likelihood of such transmission in Korea. [Extracted from the article]

Published
2024
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5. Croup as a Manifestation of SARS-CoV-2 Omicron Variant Infection in Young Children

Author

Youn Young Choi, You Sun Kim, Seong Yong Lee, Jiwoo Sim, Young June Choe, and Mi Seon Han

Subjects
Croup, SARS-CoV-2, Child, Preschool, COVID-19, Humans, General Medicine, Child, Respiratory Tract Infections
Abstract

Croup is an acute upper respiratory disease primarily caused by the parainfluenza virus. Owing to inflammation and edema of the upper airways, children present with barky cough and stridor, and some may experience respiratory distress. We investigated children aged5 years with coronavirus disease 2019 (COVID-19) admitted to two hospitals in Seoul, South Korea, and observed a spike in croup cases during the omicron surge. Among the 569 children admitted from March 1, 2021 to February 25, 2022, 21 children (3.7%) had croup, and the proportion of croup cases was significantly higher during the omicron wave than that during the delta wave (12.4% vs. 1.2%

Published
2022

7. Importation and Transmission of SARS-CoV-2 B.1.1.529 (Omicron) Variant of Concern in Korea, November 2021

Author

Ji Joo Lee, Young June Choe, Hyeongseop Jeong, Moonsu Kim, Seonggon Kim, Hanna Yoo, Kunhee Park, Chanhee Kim, Sojin Choi, JiWoo Sim, Yoojin Park, In Sil Huh, Gasil Hong, Mi Young Kim, Jin Su Song, Jihee Lee, Eun-Jin Kim, Jee Eun Rhee, Il-Hwan Kim, Jin Gwack, Jungyeon Kim, Jin-Hwan Jeon, Wook-Gyo Lee, Suyeon Jeong, Jusim Kim, Byungsik Bae, Ja Eun Kim, Hyeonsoo Kim, Hye Young Lee, Sang-Eun Lee, Jong Mu Kim, Hanul Park, Mi Yu, Jihyun Choi, Jia Kim, Hyeryeon Lee, Eun-Jung Jang, Dosang Lim, Sangwon Lee, and Young-Joon Park

Subjects
Adult, Aged, 80 and over, Male, SARS-CoV-2, COVID-19, General Medicine, Middle Aged, Brief Communication, Preventive & Social Medicine, Omicron Variant, Coronavirus, Young Adult, Republic of Korea, Humans, Female, Travel-Related Illness, Aged
Abstract

In November 2021, 14 international travel-related severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.1.529 (omicron) variant of concern (VOC) patients were detected in South Korea. Epidemiologic investigation revealed community transmission of the omicron VOC. A total of 80 SARS-CoV-2 omicron VOC-positive patients were identified until December 10, 2021 and 66 of them reported no relation to the international travel. There may be more transmissions with this VOC in Korea than reported., Graphical Abstract

Published
2021

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