A study of short-range bioaerosol deposition onto near surfaces from a cough

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Knowledge of respiratory bacteria/virus concentration and distribution on a surface is critical for assessing contact transmission. Here, we investigate the direct bioaerosol deposition and distribution on a near surface from a cough experimentally. A cough generator is used to release bacterium/virus-laden droplets. A solid surface is put in front of the cough generator. Escherichia coli (E-coli) and bacteriophage are used to represent the respiratory bacteria and virus, respectively. Results show that the number concentration of deposited droplets and viable bacteria/viruses on the surface decrease from the impingement point to surface edge. We identify the region of the impingement area on the surface in which the microorganism fraction accounts for around 83% of the overall deposited bacteria/phage along a vertical line. The E. coli-laden droplets have similar distribution with that of the phage-laden droplets, meaning that the microorganisms inside the droplets do not affect the droplet deposition onto near surfaces.

Original languageEnglish
Title of host publication16th Conference of the International Society of Indoor Air Quality and Climate
Subtitle of host publicationCreative and Smart Solutions for Better Built Environments, Indoor Air 2020
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713823605
Publication statusPublished - 2020
Event16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020 - Virtual, Online
Duration: 1 Nov 2020 → …

Publication series

Name16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020

Conference

Conference16th Conference of the International Society of Indoor Air Quality and Climate: Creative and Smart Solutions for Better Built Environments, Indoor Air 2020
CityVirtual, Online
Period1/11/20 → …

Keywords

  • Bacteria
  • Bioaerosol
  • Deposition
  • Short-range
  • Virus

ASJC Scopus subject areas

  • Building and Construction
  • Computer Science Applications
  • Health, Toxicology and Mutagenesis
  • Pollution

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