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PHRP : Osong Public Health and Research Perspectives

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8 "infectious disease"
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Original Article
Development and Utilization of a Rapid and Accurate Epidemic Investigation Support System for COVID-19
Young Joon Park, Sang Yun Cho, Jin Lee, Ikjin Lee, Won-Ho Park, Seungmyeong Jeong, Seongyun Kim, Seokjun Lee, Jaeho Kim, Ok Park
Osong Public Health Res Perspect. 2020;11(3):118-127.   Published online May 20, 2020
DOI: https://doi.org/10.24171/j.phrp.2020.11.3.06
  • 9,045 View
  • 277 Download
  • 14 Citations
AbstractAbstract PDF
Objectives

In this pandemic situation caused by a novel coronavirus disease in 2019 (COVID-19), an electronic support system that can rapidly and accurately perform epidemic investigations, is needed. It would systematically secure and analyze patients’ data (who have been confirmed to have the infection), location information, and credit card usage.

Methods

The “Infectious Disease Prevention and Control Act” in South Korea, established a legal basis for the securement, handling procedure, and disclosure of information required for epidemic investigations. The Epidemic Investigation Support System (EISS) was developed as an application platform on the Smart City data platform.

Results

The EISS performed the function of inter-institutional communication which reduced the processing period of patients’ data in comparison to other methods. This system automatically marked confirmed cases’ tracking data on a map and hot-spot analysis which lead to the prediction of areas where people may be vulnerable to infection.

Conclusion

The EISS was designed and implemented for use during an epidemic investigation to prevent the spread of an infectious disease, by specifically tracking confirmed cases of infection.

Short Communication
Contact Transmission of COVID-19 in South Korea: Novel Investigation Techniques for Tracing Contacts
Osong Public Health Res Perspect. 2020;11(1):60-63.   Published online February 28, 2020
DOI: https://doi.org/10.24171/j.phrp.2020.11.1.09
  • 37,453 View
  • 1,016 Download
  • 103 Citations
AbstractAbstract PDF

In the epidemiological investigation of an infectious disease, investigating, classifying, tracking, and managing contacts by identifying the patient’s route are important for preventing further transmission of the disease. However, omissions and errors in previous activities can occur when the investigation is performed through only a proxy interview with the patient. To overcome these limitations, methods that can objectively verify the patient’s claims (medical facility records, Global Positioning System, card transactions, and closed-circuit television) were used for the recent ongoing coronavirus disease 2019 contact investigations in South Korea.

Original Article
Effects of Timely Control Intervention on the Spread of Middle East Respiratory Syndrome Coronavirus Infection
Ilsu Choi, Dong Ho Lee, Yongkuk Kim
Osong Public Health Res Perspect. 2017;8(6):373-376.   Published online December 31, 2017
DOI: https://doi.org/10.24171/j.phrp.2017.8.6.03
  • 2,915 View
  • 27 Download
  • 1 Citations
AbstractAbstract PDF
Objectives

The 2015 Middle East Respiratory Syndrome Coronavirus (MERS-CoV) outbreak in Korea caused major economic and social problems. The control intervention was conducted during the MERS-CoV outbreak in Korea immediately after the confirmation of the index case. This study investigates whether the early risk communication with the general public and mass media is an effective preventive strategy.

Methods

The SEIR (Susceptible, Exposed, Infectious, Recovered) model with estimated parameters for the time series data of the daily MERS-CoV incidence in Korea was considered from May to December 2015. For 10,000 stochastic simulations, the SEIR model was computed using the Gillespie algorithm. Depending on the time of control intervention on the 20th, 40th, and 60th days after the identification of the index case, the box plots of MERS-CoV incidences in Korea were computed, and the results were analyzed via ANOVA.

Results

The box plots showed that there was a significant difference between the non-intervention and intervention groups (the 20th day, 40th day, and 60th day groups) and seemed to show no significant difference based on the time of intervention. However, the ANOVA revealed that early intervention was a good strategy to control the disease.

Conclusion

Appropriate risk communication can secure the confidence of the general public in the public health authorities.

Review Article
Foodborne Infectious Diseases Mediated by Inappropriate Infection Control in Food Service Businesses and Relevant Countermeasures in Korea
Jong Myong Park, Young-Hyun You, Hyun-Min Cho, Ji Won Hong, Sa-Youl Ghim
Osong Public Health Res Perspect. 2017;8(3):159-168.   Published online June 30, 2017
DOI: https://doi.org/10.24171/j.phrp.2017.8.3.02
  • 3,042 View
  • 30 Download
  • 5 Citations
AbstractAbstract PDF
Objectives

The objective of this review is to propose an appropriate course of action for improving the guidelines followed by food handlers for control of infection. For this purpose, previous epidemiological reports related to acute gastroenteritis in food service businesses mediated by food handlers were intensively analyzed.

Methods

Relevant studies were identified in international databases. We selected eligible papers reporting foodborne infectious disease outbreaks. Among primary literature collection, the abstract of each article was investigated to find cases that absolutely identified a causative factor to be food handlers’ inappropriate infection control and the taxon of causative microbial agents by epidemiological methodologies. Information about the sites (type of food business) where the outbreaks occurred was investigated.

Results

A wide variety of causative microbial agents has been investigated, using several epidemiological methods. These agents have shown diverse propagation pathways based on their own molecular pathogenesis, physiology, taxonomy, and etiology.

Conclusion

Depending on etiology, transmission, propagation, and microbiological traits, we can predict the transmission characteristics of pathogens in food preparation areas. The infected food workers have a somewhat different ecological place in infection epidemiology as compared to the general population. However, the current Korean Food Safety Act cannot propose detailed guidelines. Therefore, different methodologies have to be made available to prevent further infections.

Brief Reports
Summing up the Global Health Security Agenda 2015 High Level Meeting in Seoul
GHSA Preparation Task Force Team
Osong Public Health Res Perspect. 2015;6(6 Suppl):S6-S24.   Published online December 31, 2015
DOI: https://doi.org/10.1016/j.phrp.2015.12.005
  • 1,809 View
  • 18 Download
  • 1 Citations
AbstractAbstract PDF
The Second Global Health Security Agenda (GHSA) 2015 High Level Meeting was successfully held in September 7 to 9 in Seoul, the Republic of Korea (ROK). Delegations from 46 countries including 26 ministerial level officials and 9 international organizations participated in the meeting. ROK, one of the 10 steering group countries of GHSA, shared the importance of multi-sectoral response through the experiences of Able Response Exercise, and MERS outbreak countermeasure with international communities. ROK promised to input 10 billion USD to strengthen the capacities to respond infectious diseases in developing countries. Seoul Declaration, the first collaborative efforts on heal security, was announced at the end of the meeting. Seoul Declaration holds GHSA vision promising international collaboration and commitment.
Public Health Crisis Preparedness and Response in Korea
Hye-Young Lee, Mi-Na Oh, Yong-Shik Park, Chaeshin Chu, Tae-Jong Son
Osong Public Health Res Perspect. 2013;4(5):278-284.   Published online October 31, 2013
DOI: https://doi.org/10.1016/j.phrp.2013.09.008
  • 1,865 View
  • 17 Download
  • 20 Citations
AbstractAbstract PDF
Since the 2006 Pandemic Influenza Preparedness and Response Plan according to the World Health Organization’s recommendation, the Republic of Korea has prepared and periodically evaluated the plan to respond to various public health crises including pandemic influenza. Korea has stockpiled 13,000,000 doses of antiviral drugs covering 26% of the Korean population and runs 519 isolated beds in 16 medical institutions. The division of public health crisis response in Korea Centers for Disease Control and Prevention are in charge of responding to public health crises caused by emerging infectious diseases including severe acute respiratory syndrome, avian influenza human infection, and pandemic influenza. Its job description includes preparing for emerging infectious diseases, securing medical resources during a crisis, activating the emergency response during the crisis, and fortification of capabilities of public health personnel. It could evolve into a comprehensive national agency to deal with public health crisis based on the experience of previous national emerging infectious diseases.
Original Article
Mathematical Modeling of Vibrio vulnificus Infection in Korea and the Influence of Global Warming
Chaeshin Chu, Younghae Do, Yongkuk Kim, Yasuhisa Saito, Sun-Dong Lee, Haemo Park, Jong-Koo Lee
Osong Public Health Res Perspect. 2011;2(1):51-58.   Published online June 30, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.05.002
  • 1,774 View
  • 13 Download
  • 10 Citations
AbstractAbstract PDF
Objectives
To investigate the possible link between Vibrio vulnificus population size in seawater and water temperature.
Methods
We collected incidence and water temperature data in coastal regions of Korea and constructed a mathematical model that consisted of three classes; susceptible fish, infected fish available to humans, and infected humans.
Results
We developed a mathematical model to connect V. vulnificus incidence with water temperature using estimated bacterial population sizes and actual coastal water temperatures.
Conclusion
Increased V. vulnificus population sizes in marine environments may increase the risk of infection in people who eat at coastal restaurants in Korea. Furthermore, we estimated the near-future number of infected patients using our model, which will help to establish a public-health policy to reduce the disease burden.
Review Article
The Effect of Global Warming on Infectious Diseases
Ichiro Kurane
Osong Public Health Res Perspect. 2010;1(1):4-9.   Published online December 31, 2010
DOI: https://doi.org/10.1016/j.phrp.2010.12.004
  • 1,951 View
  • 20 Download
  • 44 Citations
AbstractAbstract PDF
Global warming has various effects on human health. The main indirect effects are on infectious diseases. Although the effects on infectious diseases will be detected worldwide, the degree and types of the effect are different, depending on the location of the respective countries and socioeconomical situations.Among infectious diseases, water- and foodborne infectious diseases and vector-borne infectious diseases are two main categories that are forecasted to be most affected. The effect on vector-borne infectious diseases such as malaria and dengue fever is mainly because of the expansion of the infested areas of vector mosquitoes and increase in the number and feeding activity of infected mosquitoes. There will be increase in the number of cases with water- and foodborne diarrhoeal diseases.Even with the strongest mitigation procedures, global warming cannot be avoided for decades. Therefore, implementation of adaptation measures to the effect of global warming is the most practical action we can take. It is generally accepted that the impacts of global warming on infectious diseases have not been apparent at this point yet in East Asia. However, these impacts will appear in one form or another if global warming continues to progress in future. Further research on the impacts of global warming on infectious diseases and on future prospects should be conducted.

PHRP : Osong Public Health and Research Perspectives