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  Respiratory aerosols and droplets in the transmission of infectious diseases

Pöhlker, M. L., Krüger, O. O., Förster, J.-D., Elbert, W., Fröhlich-Nowoisky, J., Pöschl, U., et al. (2021). Respiratory aerosols and droplets in the transmission of infectious diseases.

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https://arxiv.org/abs/2103.01188 (Preprint)
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 Creators:
Pöhlker, Mira L.1, Author              
Krüger, Ovid O.1, Author              
Förster, Jan-David1, Author              
Elbert, Wolfgang1, Author              
Fröhlich-Nowoisky, Janine1, Author              
Pöschl, Ulrich1, Author              
Pöhlker, Christopher1, Author              
Bagheri, Gholamhossein, Author
Bodenschatz , Eberhard, Author
Huffman, J. Alex, Author
Scheithauer, Simone, Author
Mikhailov, Eugene1, Author              
Affiliations:
1Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826290              

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 Abstract: Knowing the physicochemical properties of exhaled droplets and aerosol particles is a prerequisite for a detailed mechanistic understanding and effective prevention of the airborne transmission of infectious human diseases. This article provides a critical review and synthesis of scientific knowledge on the number concentrations, size distributions, composition, mixing state, and related properties of respiratory particles emitted upon breathing, speaking, singing, coughing, and sneezing. We derive and present a parametrization of respiratory particle size distributions based on five lognormal modes related to different origins in the respiratory tract, which can be used to trace and localize the sources infectious particles. This approach may support the medical treatment as well as the risk assessment for aerosol and droplet transmission of infectious diseases. It was applied to analyze which respiratory activities may drive the spread of specific pathogens, such as Mycobacterium tuberculosis, influenza viruses, and SARS-CoV-2 viruses. The results confirm the high relevance of vocalization for the transmission of SARS-CoV-2 as well as the usefulness of face masks, including community, medical, and N95/FFP2 masks, as preventive measures against COVID-19 and other airborne infectious diseases.

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Language(s): eng - English
 Dates: 2021-03-02
 Publication Status: Published online
 Pages: 46
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: arXiv:2103.01188
 Degree: -

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