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Airborne respiratory diseases such as SARS-CoV-2 (COVID-19) pose significant challenges for public transportation. Several recent outbreaks of SARS-CoV-2 indicate the high risk of transmission among passengers on public buses if special…

Fluid Dynamics · Physics 2021-02-03 Zhihang Zhang , Taehoon Han , Kwang Hee Yoo , Jesse Capecelatro , Andre Boehman , Kevin Maki

Airborne transmission of SARS-CoV-2 via virus-laden aerosols in enclosed spaces poses a significant concern. Elevators, commonly utilized enclosed spaces in modern tall buildings, present a challenge as the impact of varying heating,…

Fluid Dynamics · Physics 2023-06-28 Ata Nazari , Changchang Wang , Ruichen He , Farzad Taghizadeh-Hesary , Jiarong Hong

Exhaled droplet and aerosol-mediated transmission of respiratory diseases, including SARS-CoV-2, is exacerbated in poorly ventilated environments where body heat-driven airflow prevails. Employing large-scale simulations, we reveal how the…

Fluid Dynamics · Physics 2023-03-24 Chao-Ben Zhao , Jian-Zhao Wu , Bo-Fu Wang , Tienchong Chang , Quan Zhou , Kai Leong Chong

The coronavirus disease (COVID-19) pandemic has changed our lives and still poses a challenge to science. Numerous studies have contributed to a better understanding of the pandemic. In particular, inhalation of aerosolised pathogens has…

Populations and Evolution · Quantitative Biology 2022-09-02 Simon Rahn , Marion Gödel , Gerta Köster , Gesine Hofinger

Pathogens like the SARS-CoV-2 are transmitted not only through violent expiratory events like coughing, but also through routine activities like breathing/speaking/singing. We perform direct numerical simulations of the turbulent transport…

Fluid Dynamics · Physics 2021-07-16 Rohit Singhal , S. Ravichandran , Rama Govindarajan , Sourabh S. Diwan

In this paper the risk of infection from SARS-CoV-2 Delta variant of passengers sharing a car cabin with an infected subject for a 30-min journey is estimated through an integrated approach combining a recently developed predictive…

Airborne diseases can be transmitted by infectious aerosols in the near field, i.e., in close proximity, or in the far field, i.e., by infectious aerosols that are well mixed within the indoor air. Is it possible to say which mode of…

Populations and Evolution · Quantitative Biology 2023-04-25 Bardia Hejazi , Oliver Schlenczek , Birte Thiede , Gholamhossein Bagheri , Eberhard Bodenschatz

Airborne transmission has been recognized as an important route of transmission for SARS-CoV-2, the virus responsible for the COVID-19 pandemic. While coughing and sneezing are spectacular sources of production of infected aerosols with…

Fluid Dynamics · Physics 2024-05-09 Oğuzhan Kaplan , Manouk Abkarian , Simon Mendez

The Covid-19 pandemic has taken millions of lives, demonstrating the tragedy and disruption of respiratory diseases, and how difficult they can be to manage. However, there is still significant debate in the scientific community as to which…

Dynamical Systems · Mathematics 2021-09-03 Panagiotis Demis , Ishanki De Mel , Hayley Wragg , Michael Short , Oleksiy V. Klymenko

The health threat from SARS-CoV-2 airborne infection has become a public emergency of international concern. During the ongoing coronavirus pandemic, people have been advised by the Centers for Disease Control and Prevention to maintain…

Biological Physics · Physics 2020-10-07 Luis A. Anchordoqui , James B. Dent , Thomas J. Weiler

This paper proposes a hypothetical model for the dual role of respiratory aerosols and inflammatory exudates in the dynamics and progression of SARS-CoV-2 lung infection. Starting from a new paradigm in infectious disease transmission, we…

Tissues and Organs · Quantitative Biology 2025-06-02 Shi Qiru

Disease outbreaks, such as those of Severe Acute Respiratory Syndrome in 2003 and the 2009 pandemic A(H1N1) influenza, have highlighted the potential for airborne transmission in indoor environments. Respirable pathogen-carrying droplets…

Physics and Society · Physics 2012-01-10 M. Robinson , N. I. Stilianakis , Y. Drossinos

The transport of virus-laden aerosols from a host to a susceptible person is governed by complex turbulent airflow, and physics related to breathing, coughing and sneezing, mechanical and passive ventilation, thermal buoyancy effects,…

Fluid Dynamics · Physics 2024-06-19 Zhihang Zhang , Jesse Capecelatro , Kevin Maki

[Abridged] Naturally produced droplets from humans (such as those produced by breathing, talking, sneezing, and coughing) include several types of cells (e.g., epithelial cells and cells of the immune system), physiological electrolytes…

Popular Physics · Physics 2020-09-01 Luis A. Anchordoqui , Eugene M. Chudnovsky

Short-range exposure to airborne virus-laden respiratory droplets is now acknowledged as an effective transmission route of respiratory diseases, as exemplified by COVID-19. In order to assess the risks associated with this pathway in…

Biological Physics · Physics 2022-08-08 Simon Mendez , Willy Garcia , Alexandre Nicolas

Preventive measures to reduce infection are needed to combat the COVID-19 pandemic and prepare for a possible endemic phase. Current prophylactic vaccines are highly effective to prevent disease but lose their ability to reduce viral…

Airborne viruses, such as influenza, tuberculosis, and SARS-CoV-2, are transmitted through virus-laden particles expelled when an infectious person sneezes, coughs, talks, or breathes. These virus-laden particles are more highly…

Medical Physics · Physics 2022-07-25 Laura Fierce , Alison Robey , Cathrine Hamilton

To mitigate the SARS-CoV-2 pandemic, officials have employed social distancing and stay-at-home measures, with increased attention to room ventilation emerging only more recently. Effective distancing practices for open spaces can be…

Physics and Society · Physics 2020-08-20 Eric G. Blackman , Gourab Ghoshal

A numerical framework for the 'real-time' estimation of the infection risk from airborne diseases (e.g., SARS-CoV-2) in indoor spaces such as hospitals, restaurants, cinemas or teaching rooms is proposed. The developed model is based on the…

The SARS-CoV-2 virus is primarily transmitted through virus-laden fluid particles ejected from the mouth of infected people. Face covers can mitigate the risk of virus transmission but their outward effectiveness is not fully ascertained.…

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