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Survival and transmission fitness of SARS-CoV-2 over the time-of-flight in an aerosolization chamber

by Paquette, Daniel , Berruti, Franco , Gibson, Richard , Arts, Eric J. , Zhang, Yiying , Weninger, Dylan W. , Hird, Cody , Renaud, Steven , Donovan, Justin M. , DeGroot, Christopher T. , Prodger, Jessica L. , Lescanec, Alex , Lam, Victor , Savory, Eric

in 631/326/596/2563 / 631/326/596/4130 / Biomedical and Life Sciences / Biomedicine / Cannabis / Cell lines / Cellulose / Design / Environmental conditions / Environmental factors / Epidemiology / Humidity / Outdoor air quality / Public Health / Relative humidity / Severe acute respiratory syndrome coronavirus 2 / Temperature / Tobacco / Vaccine / Valves / Virology / Viruses

2025

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Survival and transmission fitness of SARS-CoV-2 over the time-of-flight in an aerosolization chamber

2025

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Survival and transmission fitness of SARS-CoV-2 over the time-of-flight in an aerosolization chamber

2025

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Journal Article

Survival and transmission fitness of SARS-CoV-2 over the time-of-flight in an aerosolization chamber

Paquette, Daniel,

Berruti, Franco,

Gibson, Richard,

Arts, Eric J.,

Zhang, Yiying,

Weninger, Dylan W.,

Hird, Cody,

Renaud, Steven,

Donovan, Justin M.,

DeGroot, Christopher T.,

Prodger, Jessica L.,

Lescanec, Alex,

Lam, Victor,

Savory, Eric

2025

Overview

The impact of various environmental factors on SARS-CoV-2 transmission remains debated, partly due to limited physical experiments with infectious virus that closely replicate real-world conditions. Using a novel, self-contained containment level 3 chamber, we aerosolized the virus in different environmental conditions then collected droplets on nasal tissue, cell lines, or different materials to measure the transmission of infectious SARS-CoV-2. We found that SARS-CoV-2 survival was much shorter than previously reported for the potential of fomite transmission. Temperature, relative humidity and the presence of incinerated tobacco, cannabis, or vape products had no discernible impact on SARS-CoV-2 transmission through aerosolized droplets, but affected the survival of VSV, a non-respiratory enveloped virus. When compared to USA-WA1/2020 and the Omicron variant, Delta SARS-CoV-2 had the greatest survival during aerosolization. These findings suggest that respiratory enveloped viruses like SARS-CoV-2 may have and may be continuing to evolve higher transmission fitness through droplets.

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Publisher

Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio

Subject

631/326/596/2563

/ 631/326/596/4130

/ Biomedical and Life Sciences