Abstract
The three routes of infectious disease transmission include airborne, contact, and droplet infection. It is necessary to evaluate the impact of each infection route under the same conditions, to more precisely determine infection risks. In the present study, we conducted a series of experiments to evaluate the integrated risk of infection through the various infection routes. In the droplet deposition experiment, the number of droplets deposited on membranes and environmental surfaces were measured using water-sensitive paper. The relative humidity (RH) was varied to assess its effect on droplets. In a droplet nuclei experiment, carbon dioxide gas was used as a tracer. On the basis of these results, the exposure impacts of each infection route were compared under the same RH conditions. The number of droplets deposited on eyes at 30% RH was about 20% lower than the number at 50% RH. The interrelationship between the various infection routes must be considered when developing programs to prevent infection.
| Original language | English |
|---|---|
| Title of host publication | Healthy Buildings Europe 2017 |
| Publisher | International Society of Indoor Air Quality and Climate |
| ISBN (Print) | 9788379472604 |
| Publication status | Published - 2017 Jan 1 |
| Event | Healthy Buildings Europe 2017, HB 2017 - Lublin, Poland Duration: 2017 Jul 2 → 2017 Jul 5 |
Other
| Other | Healthy Buildings Europe 2017, HB 2017 |
|---|---|
| Country | Poland |
| City | Lublin |
| Period | 17/7/2 → 17/7/5 |
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Keywords
- Cough
- Droplet
- Droplet nuclei
- Infection control
- Infection risk
- Relative humidity
- Water-sensitive paper
ASJC Scopus subject areas
- Civil and Structural Engineering
Cite this
Evaluation of the risk for infection via three transmission routes using droplet deposition and tracer gas from a cough machine. / Ichikawa, Maho; Iijima, Miki; Ogata, Masayuki; Tsutsumi, Hitomi; Tanabe, Shinichi; Hori, Satoshi.
Healthy Buildings Europe 2017. International Society of Indoor Air Quality and Climate, 2017.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Evaluation of the risk for infection via three transmission routes using droplet deposition and tracer gas from a cough machine
AU - Ichikawa, Maho
AU - Iijima, Miki
AU - Ogata, Masayuki
AU - Tsutsumi, Hitomi
AU - Tanabe, Shinichi
AU - Hori, Satoshi
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The three routes of infectious disease transmission include airborne, contact, and droplet infection. It is necessary to evaluate the impact of each infection route under the same conditions, to more precisely determine infection risks. In the present study, we conducted a series of experiments to evaluate the integrated risk of infection through the various infection routes. In the droplet deposition experiment, the number of droplets deposited on membranes and environmental surfaces were measured using water-sensitive paper. The relative humidity (RH) was varied to assess its effect on droplets. In a droplet nuclei experiment, carbon dioxide gas was used as a tracer. On the basis of these results, the exposure impacts of each infection route were compared under the same RH conditions. The number of droplets deposited on eyes at 30% RH was about 20% lower than the number at 50% RH. The interrelationship between the various infection routes must be considered when developing programs to prevent infection.
AB - The three routes of infectious disease transmission include airborne, contact, and droplet infection. It is necessary to evaluate the impact of each infection route under the same conditions, to more precisely determine infection risks. In the present study, we conducted a series of experiments to evaluate the integrated risk of infection through the various infection routes. In the droplet deposition experiment, the number of droplets deposited on membranes and environmental surfaces were measured using water-sensitive paper. The relative humidity (RH) was varied to assess its effect on droplets. In a droplet nuclei experiment, carbon dioxide gas was used as a tracer. On the basis of these results, the exposure impacts of each infection route were compared under the same RH conditions. The number of droplets deposited on eyes at 30% RH was about 20% lower than the number at 50% RH. The interrelationship between the various infection routes must be considered when developing programs to prevent infection.
KW - Cough
KW - Droplet
KW - Droplet nuclei
KW - Infection control
KW - Infection risk
KW - Relative humidity
KW - Water-sensitive paper
UR - http://www.scopus.com/inward/record.url?scp=85053887516&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053887516&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85053887516
SN - 9788379472604
BT - Healthy Buildings Europe 2017
PB - International Society of Indoor Air Quality and Climate
ER -