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  1. Article ; Online: Prevention of exposure to and spread of COVID-19 using air purifiers

    Seunghon Ham

    Epidemiology and Health, Vol

    challenges and concerns

    2020  Volume 42

    Abstract: Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level ... ...

    Abstract Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level pandemic alert (phase 6). The spread of COVID-19 is an unprecedented worldwide public health problem that governments and individuals must work to overcome. Recently, an infection cluster arose in a call center in Seoul. To support call center companies, the Korean Ministry of Employment and Labor has proposed covering the costs of installing partitions and air purifiers, providing hand sanitizers, and supplying masks to prevent droplet and aerosol infections. Air purifiers are expected to be installed on the floor with the exhaust outlets at a higher level, such as the level of the desks or breathing zones of workers. When a worker coughs or releases droplets near a colleague’s respiratory system, the droplets may spread throughout the call center via air flow from air purifier. In this fashion, a single infected person can give rise to an infection cluster. Attempts to prevent infection must not lead to new infections, and the installation of air purifiers may cause new problems. Therefore, using air purifiers to control the spread of COVID-19 should be approached with caution.
    Keywords covid-19 ; air purifier ; occupational disease ; infection cluster ; call centers ; occupational health ; Medicine ; R ; covid19
    Subject code 360
    Language English
    Publishing date 2020-04-01T00:00:00Z
    Publisher Korean Society of Epidemiology
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Prevention of exposure to and spread of COVID-19 using air purifiers: challenges and concerns.

    Ham, Seunghon

    Epidemiology and health

    2020  Volume 42, Page(s) e2020027

    Abstract: Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level ... ...

    Abstract Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level pandemic alert (phase 6). The spread of COVID-19 is an unprecedented worldwide public health problem that governments and individuals must work to overcome. Recently, an infection cluster arose in a call center in Seoul. To support call center companies, the Korean Ministry of Employment and Labor has proposed covering the costs of installing partitions and air purifiers, providing hand sanitizers, and supplying masks to prevent droplet and aerosol infections. Air purifiers are expected to be installed on the floor with the exhaust outlets at a higher level, such as the level of the desks or breathing zones of workers. When a worker coughs or releases droplets near a colleague's respiratory system, the droplets may spread throughout the call center via air flow from air purifier. In this fashion, a single infected person can give rise to an infection cluster. Attempts to prevent infection must not lead to new infections, and the installation of air purifiers may cause new problems. Therefore, using air purifiers to control the spread of COVID-19 should be approached with caution.
    MeSH term(s) Air Filters/adverse effects ; COVID-19 ; Call Centers ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Coronavirus Infections/transmission ; Humans ; Occupational Diseases/epidemiology ; Occupational Diseases/prevention & control ; Occupational Exposure/adverse effects ; Occupational Exposure/prevention & control ; Occupational Health ; Pandemics/prevention & control ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; Pneumonia, Viral/transmission ; Seoul/epidemiology
    Keywords covid19
    Language English
    Publishing date 2020-04-17
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2590698-7
    ISSN 2092-7193 ; 2092-7193
    ISSN (online) 2092-7193
    ISSN 2092-7193
    DOI 10.4178/epih.e2020027
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Examination of skin symptoms in painters in the shipyards

    Eunseun Han / Seunghon Ham / Seong-Kyu Kang

    Safety and Health at Work, Vol 13, Iss , Pp S162- (2022)

    2022  

    Keywords Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Prevention of exposure and dispersion of COVID-19 using air purifiers: challenges and concerns

    Ham, Seunghon

    Epidemiol Health

    Abstract: The outbreak of COVID-19 is now a pandemic. The Korean government has declared the highest infectious-disease alert as a 'red' and the World Health Organization (WHO) has announced the highest level (Phase 6). Control of COVID-19 is an unprecedented ... ...

    Abstract The outbreak of COVID-19 is now a pandemic. The Korean government has declared the highest infectious-disease alert as a 'red' and the World Health Organization (WHO) has announced the highest level (Phase 6). Control of COVID-19 is an unprecedented worldwide public health problem that governments and individuals must overcome. Recently, infection cluster occurred in a call center located in Seoul. The Ministry of Employment and Labor has decided to support call center companies use the cost of installing partitions, air purifiers, hand sanitizers and masks to prevent droplet and aerosol infections. Air purifiers are expected to be installed on the floor and exhaust stayed on the higher level such as desk or breathing zone of worker. When a worker coughs or releases droplets near a colleague's respiratory system, the droplets can spread throughout the call center space through the air flow. If there is only one infected person, there is a chance that the infection cluster will increase. Installation of air purifiers may cause new problems, so the control to prevent infection should not lead to a new infection. Therefore, using the air purifier to control the COVID-19 should be approached with caution.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #32311865
    Database COVID19

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  5. Article: Prevention of exposure to and spread of COVID-19 using air purifiers: challenges and concerns

    Ham, Seunghon

    Epidemiol Health

    Abstract: Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level ... ...

    Abstract Coronavirus disease 2019 (COVID-19) is now a pandemic. The Korean government has declared a red alert, which is the highest level of the national infectious disease alert system, and the World Health Organization has similarly declared its highest-level pandemic alert (phase 6). The spread of COVID-19 is an unprecedented worldwide public health problem that governments and individuals must work to overcome. Recently, an infection cluster arose in a call center in Seoul. To support call center companies, the Korean Ministry of Employment and Labor has proposed covering the costs of installing partitions and air purifiers, providing hand sanitizers, and supplying masks to prevent droplet and aerosol infections. Air purifiers are expected to be installed on the floor with the exhaust outlets at a higher level, such as the level of the desks or breathing zones of workers. When a worker coughs or releases droplets near a colleague's respiratory system, the droplets may spread throughout the call center via air flow from air purifier. In this fashion, a single infected person can give rise to an infection cluster. Attempts to prevent infection must not lead to new infections, and the installation of air purifiers may cause new problems. Therefore, using air purifiers to control the spread of COVID-19 should be approached with caution.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #99360
    Database COVID19

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  6. Article ; Online: Particulate Matter (PM) Exposure Assessment and its Control Strategies in a Small Coffee Roastery

    Seunghon Ham / Donggoen Kim / Youngjin Choi / Seong-kyu Kang

    Safety and Health at Work, Vol 13, Iss , Pp S141- (2022)

    2022  

    Keywords Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Respiratory symptoms of workers in small roastery

    Won-Jun Choi / Seunghon Ham / Ui-Jin Kim / Wanhyung Lee

    Safety and Health at Work, Vol 13, Iss , Pp S254- (2022)

    Implementation of surveillance system

    2022  

    Keywords Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article ; Online: Associations between Awareness of the Risk of Exposure to Pollutants Occurring at Fire Scenes and Health Beliefs among Metropolitan Firefighters in the Republic of Korea.

    Oh, Hyeeun / Kim, Soojin / Woo, Hyekyung / Ham, Seunghon

    International journal of environmental research and public health

    2022  Volume 19, Issue 14

    Abstract: Firefighters are repeatedly exposed to various pollutants that occur at fire scenes. There are three levels of exposure: primary exposure to pollutants, secondary exposure to pollutants on personal protective equipment (PPE), and tertiary exposure to ... ...

    Abstract Firefighters are repeatedly exposed to various pollutants that occur at fire scenes. There are three levels of exposure: primary exposure to pollutants, secondary exposure to pollutants on personal protective equipment (PPE), and tertiary exposure to contaminated fire stations and fire engines due to pollutants on PPE. Therefore, it is important for firefighters to be aware of the risk of exposure to pollutants and to practice health behaviors such as appropriate PPE management. No clear association has been established in the existing literature between firefighters' risk perception level and their health beliefs about the health impact of awareness of exposure to hazardous substances at fire scenes. This study aims to evaluate the relationship between awareness of the exposure risk to primary, secondary, and tertiary pollutants and health beliefs. It was designed as a cross-sectional study, in which a web-based survey was conducted from 13 May to 31 May 2021. The analysis was conducted in 1940 firefighters working in the Seoul metropolis who agreed to participate in the research. Participants who perceived susceptibility were likely to be aware of the primary (adjusted odds ratio (AOR) = 2.10, 95% confidence interval (CI) 1.16-3.80), secondary (AOR = 2.77, 95% CI 1.77-4.32), and tertiary (AOR = 2.73, 95% CI 1.85-4.03) exposure risks. Participants who perceived barriers were unlikely to be aware of the risk of exposure to primary (AOR = 0.67, 95% CI 0.49-0.91), secondary (AOR = 0.77, 95% CI 0.61-0.96), and tertiary (AOR = 0.75, 95% CI 0.62-0.91) pollutants. Educational intervention is recommended to improve perceived susceptibility and awareness of the risk of exposure to pollutants and reduce perceived barriers. Consequently, educational intervention is expected to positively impact firefighters' management of appropriate PPE. We confirmed an association between occupational exposure risk and firefighters' health beliefs. In the health belief model (HBM), health beliefs that affect health behavior also affect awareness of the exposure risk level. Therefore, an intervention for health beliefs can also be used to raise job-related exposure risk awareness. Regular training on the health impacts of fire scenes is necessary for both newcomers and incumbents to enable firefighters to better recognize the risks of each occupational exposure level. Additionally, laws and regulations are necessary for the removal of harmful substances that contaminate PPE, such as self-contained breathing apparatus (SCBA), during exposure to a fire scene. Our research can be used as a basis for improving fire policies and education programs in the future.
    MeSH term(s) Air Pollutants, Occupational/analysis ; Cross-Sectional Studies ; Environmental Pollutants/analysis ; Firefighters ; Humans ; Occupational Exposure/analysis ; Republic of Korea
    Chemical Substances Air Pollutants, Occupational ; Environmental Pollutants
    Language English
    Publishing date 2022-07-21
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph19148860
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  9. Article: Association Between Flexible Work Arrangement and Sleep Problems Among Paid Workers: Using 6th Korean Working Conditions Survey.

    Han, Eunseun / Lee, Yongho / Lee, Sanghyuk / Kim, Shinhyeong / Ham, Seunghon / Lee, Wanhyung / Choi, Won-Jun / Kang, Seong-Kyu

    Safety and health at work

    2024  Volume 15, Issue 1, Page(s) 53–58

    Abstract: Background: As social distancing persists and interest in work-life balance grows, more companies are adopting flexible work policies. While there have been studies on sleep disorders associated with different types of work, such as shift work, research ...

    Abstract Background: As social distancing persists and interest in work-life balance grows, more companies are adopting flexible work policies. While there have been studies on sleep disorders associated with different types of work, such as shift work, research exploring the relationship between flexible work schedules and sleep disorders is still limited, particularly among Korean workers.
    Methods: We performed a secondary analysis of the 6
    Results: Significant differences were found between flexible and non-flexible workers regarding age, income level, education level, and job type. Flexible workers reported sleep-related symptoms significantly more often. The odds ratio for insomnia was 1.40 (95% CI 1.21-1.61). For males, the odds ratio was 1.68 (1.36-2.08).
    Conclusion: This study establishes a correlation between flexible work schedules and sleep disorders among Korean salaried workers. Potential causes could include changes in circadian rhythm, increased work demands, and extended working hours. To precisely determine causality and associated diseases, further research is required.
    Language English
    Publishing date 2024-01-10
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2592798-X
    ISSN 2093-7997 ; 2093-7911
    ISSN (online) 2093-7997
    ISSN 2093-7911
    DOI 10.1016/j.shaw.2023.12.005
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  10. Article: Cancer risk in Vietnam war veterans from the Korean Vietnam war veterans' health study cohort.

    Lee, Wanhyung / Park, Soyoung / Kang, Seong-Kyu / Ham, Seunghon / Yoon, Jin-Ha / Choi, Won-Jun

    Frontiers in oncology

    2023  Volume 13, Page(s) 1048820

    Abstract: Introduction: During the Vietnam War, several unknown chemicals, such as Agent Orange, were used in Vietnam by the military. Therefore, there have been continuous health concerns among the Vietnamese population and veterans exposed to these hazardous ... ...

    Abstract Introduction: During the Vietnam War, several unknown chemicals, such as Agent Orange, were used in Vietnam by the military. Therefore, there have been continuous health concerns among the Vietnamese population and veterans exposed to these hazardous chemicals. This study aimed to investigate the risk of all cancers and also organ-specific cancers among Korean veterans of the Vietnam War.
    Methods: This study used a national representative cohort that included all Korean Vietnam War veterans as the interest group, with 1:4 age-sex-region-matched general Korean citizens as the reference group, from 2002 to 2018. Age-standardized incidence ratios (SIRs) and 95% confidence intervals (CIs) were calculated for all cancers and for 31 organ-specific cancer categories based on the medical facility visit data.
    Results: An increased SIR of 1.07 (95% CI, 1.06-1.08) was observed for all cancers among the veterans. There was a significantly increased risk of cancer among 22/31 organspecific cancers, with 18 cancer categories showing a significantly higher risk than all cancers. The highest risk was observed for "malignant neoplasms of other parts of the central nervous system" (SIR, 1.71; 95% CI, 1.51-1.92).
    Discussion: This study evaluated the risk of cancer among Korean Vietnam War veterans. Further studies are warranted to investigate various health determinants in the veterans as well as the Vietnamese population.
    Language English
    Publishing date 2023-01-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2023.1048820
    Database MEDical Literature Analysis and Retrieval System OnLINE

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