Respiratory Virus Deposition and Resuspension from Indoor Surfaces

Rawat, Mahender Singh; Ferro, A.

doi:10.1007/978-981-19-1356-3_7

Cited by 5 publications

(2 citation statements)

References 39 publications

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“…Existing resuspension models can be applied to determine the resuspension rate of settled particles due to human walking. However, the parameter values for the models vary widely [6,7] and parameter values specifically for viruses have not been determined [48]. Our model using parameter values from the literature resulted in lower resuspension rates than what we observed.…”

Section: Discussionmentioning

confidence: 67%

Resuspension of Seeded Particles Containing Live Influenza A Virus in a Full-Scale Laboratory

et al. 2023

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Many respiratory viruses, including influenza and SARS-CoV-2, are transmitted via the emission and inhalation of infectious respiratory aerosols in indoor environments. Resuspended particles from indoor surfaces and clothing can be a major source of airborne microbiological contaminants in indoor environments; however, it is unknown whether resuspended viruses contribute substantially to disease transmission. In this study, we investigated the resuspension via human walking activity of influenza A virus H3N2 laboratory strain, which was generated through a nebulizer into a sealed, unventilated biosafety level 2 (BSL-2) laboratory. The mean airborne viral concentrations following the resuspension events (3.7×103 viral RNA copies m−3) were two orders of magnitude lower than those following direct emission via the nebulizer (1.1×105 viral RNA copies m−3). The calculated resuspension emission factor (normalized ratio of the airborne mass to mass available for resuspension on the surface) of 10−3 was similar to reported values for 1–2 μm particles. Thus, depending on the infectious dose and viability of the virus, resuspension of settled respiratory viruses could lead to transmission, but the risk appears to be much lower than for direct respiratory emissions. To our knowledge, this is the first full-scale experimental study designed to quantify virus resuspension.

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Section: Discussionmentioning

confidence: 67%

Resuspension of Seeded Particles Containing Live Influenza A Virus in a Full-Scale Laboratory

et al. 2023

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“…Marked differences in bacteria isolated from dust samples collected from university dormitory rooms and printing shops were reported. Human activities or strong air currents can also suspend respiratory viruses deposited in dust or indoor surfaces (46).…”

Section: Dustmentioning

confidence: 99%

A comprehensive review of microbial contamination in the indoor environment: sources, sampling, health risks, and mitigation strategies

Chawla,

Anand,

Garg

et al. 2023

Front. Public Health

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The quality of the indoor environment significantly impacts human health and productivity, especially given the amount of time individuals spend indoors globally. While chemical pollutants have been a focus of indoor air quality research, microbial contaminants also have a significant bearing on indoor air quality. This review provides a comprehensive overview of microbial contamination in built environments, covering sources, sampling strategies, and analysis methods. Microbial contamination has various origins, including human occupants, pets, and the outdoor environment. Sampling strategies for indoor microbial contamination include air, surface, and dust sampling, and various analysis methods are used to assess microbial diversity and complexity in indoor environments. The review also discusses the health risks associated with microbial contaminants, including bacteria, fungi, and viruses, and their products in indoor air, highlighting the need for evidence-based studies that can relate to specific health conditions. The importance of indoor air quality is emphasized from the perspective of the COVID-19 pandemic. A section of the review highlights the knowledge gap related to microbiological burden in indoor environments in developing countries, using India as a representative example. Finally, potential mitigation strategies to improve microbiological indoor air quality are briefly reviewed.

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Resuspension of inhalable particles from clothing: A manikin-based chamber study

Jhang,

Yang,

Licina

2025

Building and Environment

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Respiratory Virus Deposition and Resuspension from Indoor Surfaces

Cited by 5 publications

References 39 publications

Resuspension of Seeded Particles Containing Live Influenza A Virus in a Full-Scale Laboratory

Resuspension of Seeded Particles Containing Live Influenza A Virus in a Full-Scale Laboratory

A comprehensive review of microbial contamination in the indoor environment: sources, sampling, health risks, and mitigation strategies

Resuspension of inhalable particles from clothing: A manikin-based chamber study

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