☆ 4.7 Article

Influence of talking behavior of infected patients and the associated exposure risk in a ventilated negative-pressure ward

BUILDING AND ENVIRONMENT (2024)

Related references

Note: Only part of the references are listed.

Article Public, Environmental & Occupational Health

Air dispersal of respiratory viruses other than severe acute respiratory coronavirus virus 2 (SARS-CoV-2) and the implication on hospital infection control

Shuk-Ching Wong et al.

Summary: This study found that the air dispersal of respiratory viruses may have important implications for infection prevention and public health. The viral load of patients is closely associated with the air dispersal of viruses in isolation rooms. Patients placed in double-bed isolation rooms had a higher viral load in the air compared to singly isolated patients.

INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY (2023)

Add to Collection

Article Multidisciplinary Sciences

Numerical modeling of a sneeze, a cough and a continuum speech inside a hospital lift

Sergio A. Chillón et al.

Heliyon (2023)

Add to Collection

Article Construction & Building Technology

CFD analysis of the air supply rate influence on the aerosol dispersion in a university lecture room

Fausto Arpino et al.

Summary: The study investigates the distribution of airborne droplets (aerosol) emitted in a lecture room during a 2-hour speaking activity, as a function of different air supply rates from the HVAC system. The results show that increasing the air supply rate does not always effectively reduce aerosol concentration around the classroom seats.

BUILDING AND ENVIRONMENT (2023)

Add to Collection

Article Construction & Building Technology

Transmission of droplet aerosols in an elevator cabin: Effect of the ventilation mode

Xian Li et al.

Summary: The recent COVID-19 outbreak poses a threat to public health. Due to the sealed and poorly ventilated environment, elevator cabins expose passengers to respiratory tract infections. This study examined the distribution and dispersion of droplet aerosols in elevator cabins and evaluated the transmission under three ventilation modes. Computational fluid dynamics simulations were used to analyze droplet aerosols produced by nose breathing and mouth coughing. The results showed that the air curtain ventilation mode significantly reduced the inhalation proportion of droplet aerosols compared to mixed and displacement ventilation modes, indicating its effectiveness in reducing exposure risk.

BUILDING AND ENVIRONMENT (2023)

Add to Collection

Article Construction & Building Technology

Why do ventilation strategies matter in controlling infectious airborne particles? A comprehensive numerical analysis in isolation ward

Huiyi Tan et al.

Summary: A proper ventilation strategy in an isolation ward can improve indoor air quality and reduce the risk of healthcare-associated infections (HAI) and airborne diseases. This study proposes and examines ventilation strategies to reduce particle settlement in patients. The combination of a ceiling-mounted air diffuser and air curtain jet proves effective in preventing particle settlement on patients and reducing particles in the vicinity of medical staff.

BUILDING AND ENVIRONMENT (2023)

Add to Collection

Article Computer Science, Interdisciplinary Applications

The airflow distribution and aerosol diffusion rules in the negative pressure isolation ward

Shanbi Peng et al.

Summary: Negative pressure wards are important for preventing the spread of infectious pathogens. Effective ventilation systems play a crucial role in reducing the risk of infection by controlling the airflow and motion of pathogens. This study analyzed the impact of airflow patterns and human postures on aerosol diffusion using computational fluid dynamics simulation. The results showed that the highest contaminant removal efficiency was achieved with the top supply and bottom return mode, and the standing posture had the highest efficiency. The study recommended a specific airflow scheme for negative pressure isolation wards to ensure a safe environment for medical staff and patients.

SIMULATION-TRANSACTIONS OF THE SOCIETY FOR MODELING AND SIMULATION INTERNATIONAL (2023)

Add to Collection

Article Construction & Building Technology

Poor ventilation worsens short-range airborne transmission of respiratory infection

Yuguo Li et al.

Summary: The study demonstrates that SARS-CoV-2 transmission is more common indoors than outdoors, and the ventilation rate significantly impacts airborne transmission. A ventilation rate of 10 L/s per person provides a similar concentration vs distance decay profile to outdoor settings.

INDOOR AIR (2022)

Add to Collection

Article Construction & Building Technology

Evaluation of SARS-COV-2 transmission and infection in airliner cabins

Wensi Wang et al.

Summary: Commercial airliners have played a significant role in the global spread of the SARS-CoV-2 virus. Using computational fluid dynamics, this study simulated the transmission of the virus on two flights. The results suggest that wearing masks and reducing conversation frequency can help mitigate the risk of exposure to the virus.

INDOOR AIR (2022)

Add to Collection

Article Environmental Sciences

Visualization of the infection risk assessment of SARS-CoV-2 through aerosol and surface transmission in a negative-pressure ward

Weiqi Guo et al.

Summary: Since December 2019, the COVID-19 pandemic caused by SARS-CoV-2 has posed a great challenge to global public health. Nosocomial infections have been common in medical institutions worldwide. Therefore, it is urgent to establish an effective surveillance and early warning system to prevent nosocomial infections in negative-pressure wards. This study conducted a risk assessment of SARS-CoV-2 infection through aerosol and surface transmission in a negative-pressure ward, providing insights into its distribution regularity, critical factors of infection, and factors affecting infection risk. The results can serve as a theoretical reference and technical support for reducing the occurrence of nosocomial infections.

ENVIRONMENT INTERNATIONAL (2022)

Add to Collection

Review Construction & Building Technology

Risk of SARS-CoV-2 in a car cabin assessed through 3D CFD simulations

Fausto Arpino et al.

Summary: This study estimated the risk of infection from the SARS-CoV-2 Delta variant for passengers sharing a car cabin with an infected subject for a 30-minute journey. Different factors were investigated, and the results showed that the risk of infection is influenced by key parameters and can be controlled by designing the flow patterns of the indoor environment.

INDOOR AIR (2022)

Add to Collection

Article Environmental Sciences

The role of air conditioning in the diffusion of Sars-CoV-2 in indoor environments: A first computational fluid dynamic model, based on investigations performed at the Vatican State Children's hospital

Luca Borro et al.

Summary: The study utilized CFD simulations to analyze the role of HVAC systems in infection transmission, demonstrating that HVAC systems accelerate the spread of infected droplets in indoor environments. Proper use of Local Exhaust Ventilation systems (LEV) in hospital rooms significantly reduces the spread of droplets from the patient's mouth, decreasing the risk of contagion.

ENVIRONMENTAL RESEARCH (2021)

Add to Collection

Article Construction & Building Technology

Aerosols from speaking can linger in the air for up to nine hours

Shirun Ding et al.

Summary: The study found that speech aerosols can remain suspended in the air for up to 9 hours and have the potential to transmit respiratory viruses over long distances.

BUILDING AND ENVIRONMENT (2021)

Add to Collection

Article Engineering, Chemical

Comparing aerosol concentrations and particle size distributions generated by singing, speaking and breathing

Florence K. A. Gregson et al.

Summary: This study measured aerosols from singing, speaking, and breathing in a cohort of 25 professional singers, finding that singing produces aerosols at a factor of 1.5 to 3.4 more than speaking. Guidelines for musical performances should focus on factors such as loudness, duration, number of participants, and environment, rather than vocalization type.

AEROSOL SCIENCE AND TECHNOLOGY (2021)

Add to Collection

Review Medicine, General & Internal

Breathing, speaking, coughing or sneezing: What drives transmission of SARS-CoV-2?

V Stadnytskyi et al.

Summary: The SARS-CoV-2 virus is highly contagious, with speech droplets playing a significant role in its airborne transmission. Carriers with mild or no symptoms can have high viral loads, especially in the oral cavity epithelium. While larger droplets may carry more virions, smaller speech aerosols can travel deeper into the lower respiratory tract and pose a greater risk of transmission in poorly ventilated indoor environments.

JOURNAL OF INTERNAL MEDICINE (2021)

Add to Collection

Review Multidisciplinary Sciences

Airborne transmission of respiratory viruses

Chia C. Wang et al.

Summary: The COVID-19 pandemic has exposed critical knowledge gaps in our understanding of traditional respiratory virus transmission pathways, highlighting the need for updates. Improved understanding of aerosol transmission through studies of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection calls for a reassessment of major transmission pathways for other respiratory viruses, enabling better control measures to reduce airborne transmission.

SCIENCE (2021)

Add to Collection

Article Infectious Diseases

Clinical characteristics of asymptomatic and symptomatic patients with mild COVID-19

G-u Kim et al.

CLINICAL MICROBIOLOGY AND INFECTION (2020)

Add to Collection

Article Environmental Sciences

How can airborne transmission of COVID-19 indoors be minimised?

Lidia Morawska et al.

ENVIRONMENT INTERNATIONAL (2020)

Add to Collection

Article Construction & Building Technology

Frequent recovery of influenza A but not influenza B virus RNA in aerosols in pediatric patient rooms

Eunice Yuen Chi Shiu et al.

INDOOR AIR (2020)

Add to Collection

Article Environmental Sciences

Airborne transmission of SARS-CoV-2: The world should face the reality

Lidia Morawska et al.

ENVIRONMENT INTERNATIONAL (2020)

Add to Collection

Article Infectious Diseases

The role of isolation rooms, facemasks and intensified hand hygiene in the prevention of nosocomial COVID-19 transmission in a pulmonary clinical setting

Gu-Qin Zhang et al.

INFECTIOUS DISEASES OF POVERTY (2020)

Add to Collection

Article Critical Care Medicine

Particle sizes of infectious aerosols: implications for infection control

Kevin P. Fennelly

LANCET RESPIRATORY MEDICINE (2020)

Add to Collection

Article Respiratory System

Breathing Is Enough: For the Spread of Influenza Virus and SARS-CoV-2 by Breathing Only

Gerhard Scheuch

JOURNAL OF AEROSOL MEDICINE AND PULMONARY DRUG DELIVERY (2020)

Add to Collection

Article Multidisciplinary Sciences

COVID-19 infection: Origin, transmission, and characteristics of human coronaviruses

Muhammad Adnan Shereen et al.

JOURNAL OF ADVANCED RESEARCH (2020)

Add to Collection

Letter Engineering, Chemical

Exhaled respiratory particles during singing and talking

M. Alsved et al.

AEROSOL SCIENCE AND TECHNOLOGY (2020)

Add to Collection

Article Infectious Diseases

The time scale of asymptomatic transmission affects estimates of epidemic potential in the COVID-19 outbreak

Sang Woo Park et al.

EPIDEMICS (2020)

Add to Collection

Editorial Material Medicine, General & Internal

Two metres or one: what is the evidence for physical distancing in covid-19?

Nicholas R. Jones et al.

BMJ-BRITISH MEDICAL JOURNAL (2020)

Add to Collection

Article Nanoscience & Nanotechnology

Fluid dynamics simulations show that facial masks can suppress the spread of COVID-19 in indoor environments

Ali Khosronejad et al.

AIP ADVANCES (2020)

Add to Collection

Article Physics, Fluids & Plasmas

Towards improved social distancing guidelines: Space and time dependence of virus transmission from speech-driven aerosol transport between two individuals

Fan Yang et al.

PHYSICAL REVIEW FLUIDS (2020)

Add to Collection

Article Construction & Building Technology

Particles dispersion due to human prostration cycle and ventilation system in a prayer room

Douaa Al Assaad et al.

BUILDING AND ENVIRONMENT (2019)

Add to Collection

Article Environmental Sciences

Influenza virus RNA recovered from droplets and droplet nuclei emitted by adults in an acute care setting

Lily Yip et al.

JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE (2019)

Add to Collection

Article Agricultural Engineering

Evaluating the influence of turbulence models used in computational fluid dynamics for the prediction of airflows inside poultry houses

Erdem Kucuktopcu et al.

BIOSYSTEMS ENGINEERING (2019)

Add to Collection

Article Construction & Building Technology

Numerical study of temperature-controlled airflow in comparison with turbulent mixing and laminar airflow for operating room ventilation

Cong Wang et al.

BUILDING AND ENVIRONMENT (2018)

Add to Collection

Article Construction & Building Technology

Experimental parametric study on the temperature distribution of an underfloor air distribution (UFAD) system with grille diffusers

Kai Zhang et al.

INDOOR AND BUILT ENVIRONMENT (2016)

Add to Collection

Article Construction & Building Technology

Enhanced spread of expiratory droplets by turbulence in a cough jet

Jianjian Wei et al.

BUILDING AND ENVIRONMENT (2015)

Add to Collection

Article Construction & Building Technology

Performance evaluation of a novel personalized ventilation-personalized exhaust system for airborne infection control

J. Yang et al.

INDOOR AIR (2015)

Add to Collection

Article Mechanics

Violent expiratory events: on coughing and sneezing

Lydia Bourouiba et al.

JOURNAL OF FLUID MECHANICS (2014)

Add to Collection

Article Multidisciplinary Sciences

Characterizations of particle size distribution of the droplets exhaled by sneeze

Z. Y. Han et al.

JOURNAL OF THE ROYAL SOCIETY INTERFACE (2013)

Add to Collection

Article Construction & Building Technology

Risk assessment of airborne infectious diseases in aircraft cabins

Jitendra K. Gupta et al.

INDOOR AIR (2012)

Add to Collection

Article Multidisciplinary Sciences

Minimizing the exposure of airborne pathogens by upper-room ultraviolet germicidal irradiation: an experimental and numerical study

Y. Yang et al.

JOURNAL OF THE ROYAL SOCIETY INTERFACE (2012)

Add to Collection

Article Construction & Building Technology

Transport of expiratory droplets in an aircraft cabin

Jitendra K. Gupta et al.

INDOOR AIR (2011)

Add to Collection

Article Engineering, Chemical

Modality of human expired aerosol size distributions

G. R. Johnson et al.

JOURNAL OF AEROSOL SCIENCE (2011)

Add to Collection

Article Engineering, Chemical

Theoretical analysis of the motion and evaporation of exhaled respiratory droplets of mixed composition

D. Parienta et al.

JOURNAL OF AEROSOL SCIENCE (2011)

Add to Collection

Article Construction & Building Technology

Characterizing exhaled airflow from breathing and talking

Jitendra K. Gupta et al.

INDOOR AIR (2010)

Add to Collection

Article Construction & Building Technology

Flow dynamics and characterization of a cough

J. K. Gupta et al.

INDOOR AIR (2009)

Add to Collection

Article Engineering, Chemical

Size distribution and sites of origin of droplets expelled from the human respiratory tract during expiratory activities

L. Morawska et al.

JOURNAL OF AEROSOL SCIENCE (2009)

Add to Collection

Article Engineering, Chemical

Characterization of expiration air jets and droplet size distributions immediately at the mouth opening

C. Y. H. Chao et al.

JOURNAL OF AEROSOL SCIENCE (2009)

Add to Collection

Article Construction & Building Technology

Transport mechanisms of airborne particulate matters in partitioned indoor environment

Tsang-Jung Chang et al.

BUILDING AND ENVIRONMENT (2008)

Add to Collection

Article Construction & Building Technology

CFD boundary conditions for contaminant dispersion, heat transfer and airflow simulations around human occupants in indoor environments

Jelena Srebric et al.

BUILDING AND ENVIRONMENT (2008)

Add to Collection

Article Multidisciplinary Sciences

Influenza Virus in Human Exhaled Breath: An Observational Study

Patricia Fabian et al.

PLOS ONE (2008)

Add to Collection

Article Construction & Building Technology

Droplet fate in indoor environments, or can we prevent the spread of infection?

L. Morawska

INDOOR AIR (2006)

Add to Collection

Article Construction & Building Technology

Development of ventilation design strategy for effective removal of pollutant in the isolation room of a hospital

K. W. D. Cheong et al.

BUILDING AND ENVIRONMENT (2006)

Add to Collection

Article Construction & Building Technology

The integrated effect of medical lamp position and diffuser discharge velocity on ultra-clean ventilation performance in an operating theatre

T. T. Chow et al.

INDOOR AND BUILT ENVIRONMENT (2006)

Add to Collection

Article Environmental Sciences

Toward understanding the risk of secondary airborne infection: Emission of respirable pathogens

M Nicas et al.

JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL HYGIENE (2005)

Add to Collection

Article Construction & Building Technology

Comparison of indoor aerosol particle concentration and deposition in different ventilated rooms by numerical method

B Zhao et al.

BUILDING AND ENVIRONMENT (2004)

Add to Collection

© Peeref 2019-2024. All rights reserved.