Analysis of aerosol transmission dynamics and estimation of potential risks of transmission using mathematical models.

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04377
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Juntendo University
• Principal Investigator: Hori Satoshi 順天堂大学, 大学院医学研究科, 教授 (80348937)
• Co-Investigator(Kenkyū-buntansha): 田邉 新一 早稲田大学, 理工学術院, 教授 (30188362) ; 尾方 壮行 東京都立大学, 都市環境学部, 助教 (90778002)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: COVID-19 / 新型コロナウイルス感染症 / 感染症対策 / 換気 / CO2濃度

Outline of Final Research Achievements

To assess the risk of indoor transmission of COVID-19, we developed a method for evaluating ventilation status using CO2 concentration measurements, as well as a flowchart for necessary improvements in low-ventilation conditions. This flowchart has been presented at domestic academic conferences, including the Japanese Environmental Infection Society and the Japan Society of Healthcare Engineering, and has also been featured in the Cabinet Infectious Disease Crisis Management Office's project, "Ventilation Measures to Prevent Infections in Group Living Settings: Case Studies and Explanations for Nursery Schools and Elderly Care Facilities." It is expected to be widely utilized in daily life.

Free Research Field

感染症対策

Academic Significance and Societal Importance of the Research Achievements

換気状態の評価方法として、CO2濃度測定を根拠とした換気状態の解釈と、低換気状態の時に必要な改善フローについて単純かつ明快に示した。これにより、医療施設、福祉施設だけではなく、一般の事業所や工場でも広く活用可能な改善方針の決定ツールとして広く活用が期待されている。