Influence of indoor environmental conditions on airborne transmission and lifetime of sneeze droplets in a confined space: a way to reduce COVID-19 spread

Bahramian, Alireza

doi:10.1007/s11356-023-25421-x

Cited by 3 publications

(1 citation statement)

References 61 publications

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“…The virus then sneaks into the body via the mucous membranes, infecting the susceptible person. Indirect contact transmission involving contact of a susceptible host with a contaminated object or surface (fomite transmission) may also be possible (Bahramian et al, 2023;.…”

Section: Contact and Droplet Transmissionmentioning

confidence: 99%

COVID-19 prevention and health promotion for the whole community

Mohammed,

Umar

2023

J. Public Health Dis.

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As our understanding of Covid-19 has grown, numerous techniques for preventing its spread have emerged. Scholars and practitioners in public health have focused on four important Covid-19 prevention strategies: behavioural, technical, biomedical, and structural/community-level interventions. Recent material in these areas provides an overview of current Covid-19 preventive breakthroughs. Current COVID-19 prevention models, which build on traditional techniques, use intimate partners, families, social media, emerging technology, prescription therapy, immunization, and regulatory changes to influence change. Despite significant success, more action is required to meet the national goal of stopping the COVID-19 epidemic. Government and non-governmental organizations are uniquely positioned to promote prevention science in collaboration with cross-disciplinary professionals from other domains.

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Section: Contact and Droplet Transmissionmentioning

confidence: 99%

COVID-19 prevention and health promotion for the whole community

Mohammed,

Umar

2023

J. Public Health Dis.

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RETRACTED: Influence of indoor relative humidity on the number concentration, size distribution, and trajectory of sneeze droplets: Effects on social distancing guidelines

Bahramian

Ahmadi

2023

International Journal of Multiphase Flow

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Coupled Eulerian Wall Film–Discrete Phase model for predicting respiratory droplet generation during a coughing event

Khoa,

Kuga,

Inthavong

et al. 2023

Physics of Fluids

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Infectious respiratory diseases have long been a serious public health issue, with airborne transmission via close person-to-person contact being the main infection route. Coughing episodes are an eruptive source of virus-laden droplets that increase the infection risk of susceptible individuals. In this study, the droplet generation process during a coughing event was reproduced using the Eulerian wall film (EWF) model, and the absorption/expulsion of droplets was tracked using the discrete phase model (DPM). A realistic numerical model that included the oral cavity with teeth features and the respiratory system from the throat to the first bifurcation was developed. A coughing flow profile simulated the flow patterns of a single coughing episode. The EWF and DPM models were coupled to predict the droplet formation, generation, absorption, and exhalation processes. The results showed that a large droplet number concentration was generated at the beginning of the coughing event, with the peak concentration coinciding with the peak cough rate. Analysis of the droplet site of origin showed that large amounts of droplets were generated in the oral cavity and teeth surface, followed by the caudal region of the respiratory system. The size of the expelled droplets was 0.25–24 μm, with the peak concentration at 4–8 μm. This study significantly contributes to the realm on the site of origin and localized number concentration of droplets after a coughing episode. It can facilitate studies on infection risk assessment, droplet dispersion, and droplet generation mechanisms from other sneezing or phonation activities.

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Influence of indoor environmental conditions on airborne transmission and lifetime of sneeze droplets in a confined space: a way to reduce COVID-19 spread

Cited by 3 publications

References 61 publications

COVID-19 prevention and health promotion for the whole community

COVID-19 prevention and health promotion for the whole community

RETRACTED: Influence of indoor relative humidity on the number concentration, size distribution, and trajectory of sneeze droplets: Effects on social distancing guidelines

Coupled Eulerian Wall Film–Discrete Phase model for predicting respiratory droplet generation during a coughing event

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