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Study on the transmission system of influenza virus due to the viscosity of aerosol

Research Project

Project/Area Number 18H03040
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

NAKAYA TAKAAKI  京都府立医科大学, 医学(系)研究科(研究院), 教授 (80271633)

Co-Investigator(Kenkyū-buntansha) 廣瀬 亮平  京都府立医科大学, 医学(系)研究科(研究院), 助教 (50795383)
白杉 迪洋  京都府立医科大学, 医学部附属病院, 専攻医 (80807727)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Keywordsインフルエンザウイルス / 飛沫感染 / エアロゾル / COVID-19 / SARS-CoV-2 / 伝播機構 / 飛沫 / ウイルス / インフルエンザ / 呼吸器ウイルス / 空気感染 / 呼吸器感染ウイルス / 粘性 / 手指衛生 / レオロジー / 粘弾性 / 腸管感染
Outline of Final Research Achievements

We demonstrated that the efficacy of hand-washing using ethanol-based disinfectant against mucus is greatly reduced until infectious mucus adhering to the hands/fingers has completely dried. We also evaluated the stability of SARS-CoV-2 and influenza A virus (IAV), mixed with culture medium or upper respiratory mucus, on human skin surfaces and the dermal disinfection effectiveness of 80% (w/w) ethanol against each virus. The results showed that SARS-CoV-2 and IAV were inactivated more rapidly on skin surfaces than on other surfaces (stainless steel/glass/plastic); the survival time was significantly longer for SARS-CoV-2 than for IAV [9.04 h (95% confidence interval: 7.96-10.2 h) vs. 1.82 h (1.65-2.00 h)]. In addition, our further investigations showed that high concentrations of benzalkonium chloride and chlorhexidine gluconate-based disinfectants may be applicable to hand hygiene targeting SARS-CoV-2 as an alternative to alcohol-based disinfectants.

Academic Significance and Societal Importance of the Research Achievements

インフルエンザウイルスやSARS-CoV-2などによる接触、飛沫(空気)感染は、迅速かつ広範に感染拡大が起こることが特徴である。上記ウイルスの生体内(細胞内)における感染・増殖機構については集中的な研究が行われている一方で、その伝播経路については未だ不明な点が多い。本研究は、解剖献体由来の組織を用いて、皮膚モデルを構築し、「皮膚表面上におけるウイルスの感染・伝播動態を明らかにしようとする点」が最大の特色である。本研究の遂行により、ヒト皮膚表面上の(喀痰中)ウイルス感染性の経時的変化と各種消毒薬に対する感染性失活について知見を得、論文発表することができた。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 2018 Other

All Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 11 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Reply to Gracely2021

    • Author(s)
      Hirose Ryohei、Ikegaya Hiroshi、Naito Yuji、Watanabe Naoto、Yoshida Takuma、Bandou Risa、Daidoji Tomo、Itoh Yoshito、Nakaya Takaaki
    • Journal Title

      Clinical Infectious Diseases

      Volume: in-press Issue: 3 Pages: e854-e856

    • DOI

      10.1093/cid/ciab023

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Proteins produced by Streptococcus species in the lower respiratory tract can modify antiviral responses against influenza virus in respiratory epithelial cells2021

    • Author(s)
      Nishioka Keisuke、Kyo Michihito、Nakaya Takaaki、Shime Nobuaki
    • Journal Title

      Microbes and Infection

      Volume: 23 Issue: 1 Pages: 104764-104764

    • DOI

      10.1016/j.micinf.2020.09.010

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Survival of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) and Influenza Virus on Human Skin: Importance of Hand Hygiene in Coronavirus Disease 2019 (COVID-19)2020

    • Author(s)
      Hirose Ryohei、Ikegaya Hiroshi、Naito Yuji、Watanabe Naoto、Yoshida Takuma、Bandou Risa、Daidoji Tomo、Itoh Yoshito、Nakaya Takaaki
    • Journal Title

      Clinical Infectious Diseases

      Volume: in-press Issue: 11 Pages: e4329-e4335

    • DOI

      10.1093/cid/ciaa1517

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Irradiation by a Combination of Different Peak-Wavelength Ultraviolet-Light Emitting Diodes Enhances the Inactivation of Influenza A Viruses2020

    • Author(s)
      Kojima Mizuki、Mawatari Kazuaki、Emoto Takahiro、Nishisaka-Nonaka Risa、Bui Thi Kim Ngan、Shimohata Takaaki、Uebanso Takashi、Akutagawa Masatake、Kinouchi Yohsuke、Wada Takahiro、Okamoto Masayuki、Ito Hiroshi、Tojo Kenji、Daidoji Tomo、Nakaya Takaaki、Takahashi Akira
    • Journal Title

      Microorganisms

      Volume: 8 Issue: 7 Pages: 1014-1014

    • DOI

      10.3390/microorganisms8071014

    • NAID

      120007144455

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reply to Peters and Pittet, "Influenza and Alcohol-Based Handrub: the Danger of Ignoring Clinical Relevance," and Boyce, "Alcohol-Based Handrubs and Influenza A".2019

    • Author(s)
      Hirose R, Nakaya T
    • Journal Title

      mSphere

      Volume: 4 Issue: 6

    • DOI

      10.1128/msphere.00745-19

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Demethylation around the transcriptional start site of the IFN-β gene induces IFN-β production and protection against influenza virus infection2019

    • Author(s)
      Nishioka Keisuke、Daidoji Tomo、Nakaya Takaaki
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 520 Issue: 2 Pages: 269-276

    • DOI

      10.1016/j.bbrc.2019.09.136

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Situations leading to reduced effectiveness of current hand hygiene against infectious mucus from influenza-infected patients.2019

    • Author(s)
      Hirose R, Nakaya T, Naito Y, Daidoji T, Bandou R, Inoue K, Dohi O, Yoshida N, Konishi H, Itoh Y.
    • Journal Title

      mSphere

      Volume: 4 Issue: 5

    • DOI

      10.1128/msphere.00474-19

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] PB2 mutations arising during H9N2 influenza evolution in the Middle East confer enhanced replication and growth in mammals.2019

    • Author(s)
      Arai Y, Kawashita N, Ibrahim MS, Elgendy EM, Daidoji T, Ono T, Takagi T, Nakaya T, Matsumoto K, Watanabe Y.
    • Journal Title

      PLOS Pathogens

      Volume: 15(7) Issue: 7 Pages: e1007919-e1007919

    • DOI

      10.1371/journal.ppat.1007919

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Genetic Compatibility of Reassortants between Avian H5N1 and H9N2 Influenza Viruses with Higher Pathogenicity in Mammals.2019

    • Author(s)
      Arai Y, Ibrahim MS, Elgendy EM, Daidoji T, Ono T, Suzuki Y, Nakaya T, Matsumoto K, Watanabe Y.
    • Journal Title

      J Virol.

      Volume: 93(4) Issue: 4

    • DOI

      10.1128/jvi.01969-18

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Relationship between periodontal disease and butyric acid produced by periodontopathic bacteria2018

    • Author(s)
      Shirasugi Michihiro, Nakagawa Maki, Nishioka Keisuke, Yamamoto Toshiro, Nakaya Takaaki, Kanamura Narisato
    • Journal Title

      Inflammation and Regeneration

      Volume: 38 Issue: 1 Pages: 23-23

    • DOI

      10.1186/s41232-018-0081-x

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Irradiation by ultraviolet light-emitting diodes inactivates influenza a viruses by inhibiting replication and transcription of viral RNA in host cells2018

    • Author(s)
      Nishisaka-Nonaka Risa、Mawatari Kazuaki、Yamamoto Tomomi、Kojima Mizuki、Shimohata Takaaki、Uebanso Takashi、Nakahashi Mutsumi、Emoto Takahiro、Akutagawa Masatake、Kinouchi Yohsuke、Wada Takahiro、Okamoto Masayuki、Ito Hiroshi、Yoshida Ken-ichi、Daidoji Tomo、Nakaya Takaaki、Takahashi Akira
    • Journal Title

      Journal of Photochemistry and Photobiology B: Biology

      Volume: 189 Pages: 193-200

    • DOI

      10.1016/j.jphotobiol.2018.10.017

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] コロナウイルスと呼吸不全2020

    • Author(s)
      中屋隆明
    • Organizer
      第42回日本呼吸療法医学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 熱帯地域(タイ国)における網羅的病原体検出法開発の共同研究推進課題の成果について2018

    • Author(s)
      中屋隆明
    • Organizer
      NRCT- JSPS-JAAT Seminar at Research Expo 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 京都府立医科大学 感染病態学

    • Related Report
      2019 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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