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

By Lidia Morawska, G. Johnson, Zoran D. Ristovski, M. Hargreaves, Kerrie L. Mengersen, S. Corbett, Christopher Y. H. Chao, Yuguo Li, D. Katoshevski. 2009

1,065 citations recorded by the source corpus.

Subfields: Health, Toxicology and Mutagenesis, Pulmonary and Respiratory Medicine

View Paper: https://www.semanticscholar.org/paper/6292581c22b7c1cd3616cf990c9f51d9a613e059

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In Health, Toxicology and Mutagenesis

In Pulmonary and Respiratory Medicine

Citations in the corpus

The airborne lifetime of small speech droplets and their potential importance in SARS-CoV-2 transmission (2020, background): “Considering the short travel time (0.7 s) between exiting the mouth and the APS detector, and the high relative humidity (59”
Airborne transmission of SARS-CoV-2: The world should face the reality (2020, background): “Such small droplets are free to travel in the air and carry their viral content meters and tens of meters from where they originated (e.g. Morawska et al. 2009), as graphically presented in Fig.”
It is Time to Address Airborne Transmission of COVID-19 (2020, background): “This may be the author’s version of a work that was submitted/accepted for publication in the following source: Morawska, Lidia & Milton, Donald K (2020) It is time to address airborne transmission of Coronavirus disease 2019 (COVID-19).”
Transmission of SARS‐CoV‐2 by inhalation of respiratory aerosol in the Skagit Valley Chorale superspreading event (2020, positive): “38 For this concentration range, a volumetric breathing rate of 1 m 3 h -1 would produce an emission rate of 1-10 nL h -1 of respiratory aerosol.”
Violent expiratory events: on coughing and sneezing (2014, methodology): “…studies have been aimed at measuring the size distribution of droplets emitted by various respiratory functions, such as coughing and sneezing (e.g. Wells 1934, 1955; Duguid 1945; Loudon & Roberts 1967; Papineni & Rosenthal 1997; Yang et al. 2007; Morawska et al. 2009b; Johnson et al. 2011).”
Airborne transmission of respiratory viruses (2021, background): “0 mm, each representing a different generation site, production process, and expiratory activity (2, 8, 9, 85, 91, 93).”
The role of particle size in aerosolised pathogen transmission: A review (2010, positive): “As earlier discussed, coughing and speech are reported to produce particles from vibrations of vocal chords.(9) This implies that infection of the larynx is the optimal location for propagation of pathogen by these activities.”
Aerosol filtration efficiency of household materials for homemade face masks: Influence of material properties, particle size, particle electrical charge, face velocity, and leaks (2020, background): “…particles cover a particle size range from dp¼ 0.01mm up to 1000 mm (Gralton et al. 2011; Bake et al. 2019 and references therein), generated by coughing and sneezing, but also during speaking and regular breathing (Chao et al. 2009; Morawska et al. 2009; Johnson et al. 2011; Bake et al. 2019).”
Estimation of airborne viral emission: Quanta emission rate of SARS-CoV-2 for infection risk assessment (2020, positive): “, 2009) and, above all, increasingly accurate particle counters (Morawska et al., 2009) allowed the detailed characterization and quantitation of droplets expelled during various forms of human respiratory exhalation flows (e.”
Face Masks in the New COVID-19 Normal: Materials, Testing, and Perspectives (2020, background): “When participants made the “Aah” sound, there were emissions of up to 330 particles per second [30].”
Flow dynamics and characterization of a cough. (2009, background): “There is substantial literature on cough droplet size distribution (Duguid, 1945; Fairchild et al., 1987; Papineni et al., 1997; Fenelly et al., 2004; Yang et al., 2007; Hersen et al., 2008; Chao et al., 2009; Morawska et al., 2009) and exhaled air temperature (Hoppe, 1981).”