Evaluation of the risk for infection via three transmission routes using droplet deposition and tracer gas from a cough machine

Maho Ichikawa, Miki Iijima, Masayuki Ogata, Hitomi Tsutsumi, Shinichi Tanabe, Satoshi Hori

    研究成果: Conference contribution

    抄録

    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.

    本文言語English
    ホスト出版物のタイトルHealthy Buildings Europe 2017
    出版社International Society of Indoor Air Quality and Climate
    ISBN(印刷版)9788379472604
    出版ステータスPublished - 2017 1 1
    イベントHealthy Buildings Europe 2017, HB 2017 - Lublin, Poland
    継続期間: 2017 7 22017 7 5

    Other

    OtherHealthy Buildings Europe 2017, HB 2017
    CountryPoland
    CityLublin
    Period17/7/217/7/5

    ASJC Scopus subject areas

    • Civil and Structural Engineering

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