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An analysis of the association between sexually transmitted diseases

Research Project

Project/Area Number 19K20393
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 62010:Life, health and medical informatics-related
Research InstitutionHokkaido University

Principal Investigator

Omori Ryosuke  北海道大学, 人獣共通感染症国際共同研究所, 准教授 (10746952)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords感染症疫学 / 数理モデル / 感染症 / 理論疫学 / HIV / 性感染症
Outline of Research at the Start

HSV-2、淋病、クラミジア、梅毒といった入手のしやすい主たる性感染症の有病率の組み合わせからHIVの流行を予測する方法の確立の為に、性感染症間での流行動態の相関を数理モデリングにより検証する。また、性感染症間の流行干渉の流行動態に与える影響を数理モデリングにより解析する。得られた知見をもとに統計モデルを作成し、世界各国の実疫学データによるHIV流行予測手法の検証を行い、その精度を検証する。

Outline of Final Research Achievements

Associations between sexually transmitted infections are not understood well so far. Also, the outbreak risk of STIs are difficult to evaluate due to difficulty in measuring and quantifying the sexual network. In this project, we assessed these associations and quantifying STI epidemic potential using mathematical modeling. To this end, an individual-based mathematical model was constructed to describe sex partnering and STI concurrent transmission of HIV, herpes simplex virus type 2 (HSV-2), gonorrhea, chlamydia, and syphilis. Model parametrization was done using representative biological and behavioral data. Associations were assessed on model-simulated STI prevalences. Sexual networks affect STIs in variable ways, leading to rich dynamics and varying associations between STIs. The understanding of the prevalences of STIs can be predictive of that of another STI. Especially for HIV, prevalence of other STIs can be used as an objective biomarker for HIV outbreak potential.

Academic Significance and Societal Importance of the Research Achievements

性感染症の流行の特徴の一つとして感染リスクは人により大きく異る事があり、流行の制御のためには、感染リスクが高い集団を見つけ出し介入することが必要である。性感染症の感染リスクは性行動に起因するが、性行動の計測は一般的には困難であり、高リスクである集団を見つけ出すことが難しい。本研究は、性感染症の感染リスクを性行動の計測を介さず性感染症の流行から高リスク集団を見つけ出す手法の確立に貢献した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (1 results)

  • [Int'l Joint Research] Georgia State University(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Weill Cornell Medicine - Qatar(カタール)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Estimating the comprehensive overview of Oncorhynchus masou virus disease outbreak in Rainbow trout using mortality data: Coupling data on experimental infection and field observation by mathematical modeling2022

    • Author(s)
      Omori Ryosuke、Matsuyama Ryota、Nakata Yukihiko、Furihata Mitsuru、Kasai Hisae
    • Journal Title

      Aquaculture

      Volume: 554 Pages: 738165-738165

    • DOI

      10.1016/j.aquaculture.2022.738165

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Changes in Testing Rates Could Mask the Novel Coronavirus Disease (COVID-19) Growth Rate2020

    • Author(s)
      Omori R, Mizumoto K, Chowell G.
    • Journal Title

      Int J Infect Dis

      Volume: 94 Pages: 116-118

    • DOI

      10.1016/j.ijid.2020.04.021

    • NAID

      120006841658

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The age distribution of mortality from novel coronavirus disease (COVID-19) suggests no large difference of susceptibility by age2020

    • Author(s)
      Omori Ryosuke、Matsuyama Ryota、Nakata Yukihiko
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 16642-16642

    • DOI

      10.1038/s41598-020-73777-8

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 養殖における魚病疫学解析の問題とその解決法 -実験と観察を繋ぐ為の数理モデルの活用-2022

    • Author(s)
      大森亮介、松山亮太、降幡充、笠井久会
    • Organizer
      獣医疫学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Susceptibility to COVID-19 infection: Insights from mathematical modelling2020

    • Author(s)
      大森亮介
    • Organizer
      International Symposium on Data Science 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Age-specificity of susceptibility against COVID-19 infection2020

    • Author(s)
      大森亮介
    • Organizer
      日本ウイルス学会北海道支部会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 新型コロナウイルス感染症に対する感受性の年齢依存性の考察2020

    • Author(s)
      大森亮介
    • Organizer
      日本応用数理学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Associations between different sexually transmitted infections propagating on sexual networks of men who have sex with men2019

    • Author(s)
      Ryosuke Omori, Laith J. Abu-Raddad
    • Organizer
      the 7th International Conference on Infectious Disease Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Predictability of Prevalence of Sexually Transmitted Infections on Complex Sexual Network2019

    • Author(s)
      Ryosuke Omori, Laith J. Abu-Raddad
    • Organizer
      STI&HIV2019 world congress
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks]

    • URL

      https://researchmap.jp/ken

    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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