Infection Risk of Indoor Airborne Transmission of Diseases in Multiple Spaces

Tung, Yun-Chun; Hu, Shih−Cheng

doi:10.3763/asre.2008.5103

Cited by 14 publications

(19 citation statements)

References 10 publications

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“…Spatial distribution of gas concentration is then obtained and the amount of exhaled breath inhaled by the susceptible person at different locations can be calculated. Some risk assessment studies have used these approaches to incorporate spatial variation into infection risk (e.g., Gao et al., 2008; Tung and Hu, 2008). These approaches can provide more realistic results, but they are more time‐consuming than using the multiple box or multi‐zone model.…”

Section: Model Development and Modificationmentioning

confidence: 99%

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

2010

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This review article summarizes the strengths and limitations of the Wells-Riley and the dose-response models for risk assessment of respiratory diseases. Even with many efforts by various investigators to develop and modify the risk assessment models, some limitations still persist. This review serves as a reference for further development of infection risk assessment models of respiratory diseases. The Wells-Riley model and dose-response model offer specific advantages. Risk assessors can select the approach that is suitable to their particular conditions to perform risk assessment.

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Section: Model Development and Modificationmentioning

confidence: 99%

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

2010

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“…It was indicated in this study that the concentration level of the upper room is two orders of magnitude lower than the adjacent lower room, but the difference of infection risk between them is only one order of magnitude. Wells-Riley model plays an important role in transforming pathogen concentration to the infection risk and increasing researches which applied Wells-Riley model to CFD simulation can be found: Noakes et al (n.d.) studied transmission method of the airborne pathogen in an enclosed space and Tung and Hu (2008) simulated the airborne transmission of the indoor environment in multiple spaces; Moreover, Aliabadi et al (2014) , Gupta et al (2012) , Villafruela et al (2013) and You et al (2019) used this model in the simulations of their research.…”

Section: Epidemic Theories and Experimental Methodsmentioning

confidence: 99%

The role of computational fluid dynamics tools on investigation of pathogen transmission: Prevention and control

Peng

Chen

Liu

2020

Science of The Total Environment

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Transmission mechanics of infectious pathogen in various environments are of great complexity and has always been attracting many researchers' attention. As a cost-effective and powerful method, Computational Fluid Dynamics (CFD) plays an important role in numerically solving environmental fluid mechanics. Besides, with the development of computer science, an increasing number of researchers start to analyze pathogen transmission by using CFD methods. Inspired by the impact of COVID-19, this review summarizes research works of pathogen transmission based on CFD methods with different models and algorithms. Defining the pathogen as the particle or gaseous in CFD simulation is a common method and epidemic models are used in some investigations to rise the authenticity of calculation. Although it is not so difficult to describe the physical characteristics of pathogens, how to describe the biological characteristics of it is still a big challenge in the CFD simulation. A series of investigations which analyzed pathogen transmission in different environments (hospital, teaching building, etc) demonstrated the effect of airflow on pathogen transmission and emphasized the importance of reasonable ventilation. Finally, this review presented three advanced methods: LBM method, Porous Media method, and Web-based forecasting method. Although CFD methods mentioned in this review may not alleviate the current pandemic situation, it helps researchers realize the transmission mechanisms of pathogens like viruses and bacteria and provides guidelines for reducing infection risk in epidemic or pandemic situations.

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“…Of the 11 studies reporting data for the effect of the anteroom (vestibule) area in controlling hospital infections caused by infectious organisms ( 17 , 21 , 26 , 29 , 32 – 36 , 42 , 43 ), 8 had separate data for viral infections ( 17 , 21 , 32 , 34 – 36 , 42 , 43 ). Also, 2 studies reported data on bacterial infections ( 29 , 33 ), and one study included fungal infections ( 26 ).…”

Section: Resultsmentioning

confidence: 99%

“…Four studies focused on the pressure difference gradient between rooms ( 17 , 36 , 41 , 43 ). In one study, a −8 Pa pressure difference between an anteroom and isolation room resulted in better function and effective infection prevention ( 36 ).…”

Section: Resultsmentioning

confidence: 99%

The Effectiveness of the Anteroom (Vestibule) Area on Hospital Infection Control and Health Staff Safety: A Systematic Review

Andalib

Faghani

Ziabari

et al. 2022

Front. Public Health

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The emergence of SARS-CoV2 in 2019 showed again that the world's healthcare system is not fully equipped and well-designed for preventing the transmission of nosocomial respiratory infections. One of the great tools for preventing the spread of infectious organisms in hospitals is the anteroom. Several articles have investigated the role of the anteroom in disease control but the lack of a comprehensive study in this field prompted us to provide more in-depth information to fill this gap. Also, this study aimed to assess the necessity to construct an anteroom area for hospital staff members at the entrance of each ward of the hospital, and specify the equipment and facilities which make the anteroom more efficient. Articles were identified through searches of Scopus, Web of Sciences, PubMed, and Embase for studies published in English until May 2020 reporting data on the effect of the anteroom (vestibule) area in controlling hospital infections. Data from eligible articles were extracted and presented according to PRISMA's evidence-based data evaluation search strategy. Also, details around the review aims and methods were registered with the PROSPERO. From the database, 209 articles were identified, of which 25 studies met the study criteria. Most studies demonstrated that an anteroom significantly enhances practical system efficiency. The results showed that the equipment such as ventilation system, high-efficiency particulate absorption filter, hand dispensers, alcohol-based disinfection, sink, mirror, transparent panel, UVC disinfection, and zone for PPE change, and parameters like temperature, door type, pressure, and size of the anteroom are factors that are effective on the safety of the hospital environment. Studies demonstrated that providing an anteroom for changing clothing and storing equipment may be useful in reducing the transmission of airborne infections in hospitals. Since the transmission route of SARS-CoV2 is common with other respiratory infectious agents, it can be concluded that a well-designed anteroom could potentially decrease the risk of SARS-CoV2 transmission during hospitalization as well.

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Infection Risk of Indoor Airborne Transmission of Diseases in Multiple Spaces

Cited by 14 publications

References 10 publications

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

The role of computational fluid dynamics tools on investigation of pathogen transmission: Prevention and control

The Effectiveness of the Anteroom (Vestibule) Area on Hospital Infection Control and Health Staff Safety: A Systematic Review

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Infection Risk of Indoor Airborne Transmission of Diseases in Multiple Spaces

Cited by 14 publications

References 10 publications

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

The role of computational fluid dynamics tools on investigation of pathogen transmission: Prevention and control

The Effectiveness of the Anteroom (Vestibule) Area on Hospital Infection Control and Health Staff Safety: A Systematic Review

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Product

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Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases

Review and comparison between the WellsâRiley and dose-response approaches to risk assessment of infectious respiratory diseases