Supplementary material from "Modelling the direct virus exposure risk associated with respiratory events"

Posted on 12.01.2022 - 09:26
The outbreak of the COVID-19 pandemic highlighted the importance of accurately modelling the pathogen transmission via droplets and aerosols emitted while speaking, coughing and sneezing. In this work, we present an effective model for assessing the direct contagion risk associated with these pathogen-laden droplets. In particular, using the most recent studies on multi-phase flow physics, we develop an effective yet simple framework capable of predicting the infection risk associated with different respiratory activities in different ambient conditions. We start by describing the mathematical framework and benchmarking the model predictions against well-assessed literature results. Then, we provide a systematic assessment of the effects of physical distancing and face coverings on the direct infection risk. The present results indicate that the risk of infection is vastly impacted by the ambient conditions and the type of respiratory activity, suggesting the non-existence of a universal safe distance. Meanwhile, wearing face masks provides excellent protection, effectively limiting the transmission of pathogens even at short physical distances, i.e. 1 m.


wang, Jietuo; Dalla Barba, Federico; Roccon, Alessio; Sardina, Gaetano; Soldati, Alfredo; picano, Francesco (2022): Supplementary material from "Modelling the direct virus exposure risk associated with respiratory events". The Royal Society. Collection.
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Journal of the Royal Society Interface


Jietuo wang
Federico Dalla Barba
Alessio Roccon
Gaetano Sardina
Alfredo Soldati
Francesco picano
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