The type-reproduction number of sexually transmitted infections through heterosexual and vertical transmission

• Ito, Hiromu

• Yamamoto, Taro

• Morita, Satoru

抄録

Multiple sexually transmitted infections (STIs) have threatened human health for centuries. Most STIs spread not only through sexual (horizontal) transmission but also through mother-to-child (vertical) transmission. In a previous work (Ito et al. 2019), we studied a simple model including heterosexual and mother-to-child transmission and proposed a formulation of the basic reproduction number over generations. In the present study, we improved the model to take into account some factors neglected in the previous work: adult mortality from infection, infant mortality caused by mother-to-child transmission, infertility or stillbirth caused by infection, and recovery with treatment. We showed that the addition of these factors has no essential effect on the theoretical formulation. To study the characteristics of the epidemic threshold, we derived analytical formulas for three type-reproduction numbers for adult men, adult women and juveniles. Our result indicates that if an efficient vaccine exists for a prevalent STI, vaccination of females is more effective for containment of the STI than vaccination of males, because the type-reproduction number for adult men is larger than that for adult women when they are larger than one.

Scientific reports, 9(1), art.no.17408; 2019

収録刊行物

• Scientific Reports

  Scientific Reports 9 (1), 17408-, 2019-11-22

  Springer Nature

キーワード

• Multidisciplinary

詳細情報

• CRID: 1050287297240585088
• NII論文ID: 120006988360
• ISSN: 20452322
• DOI: 10.1038/s41598-019-53841-8
• HANDLE: 10069/39565
• Web Site: https://nagasaki-u.repo.nii.ac.jp/records/400
• Web Site: https://www.nature.com/articles/s41598-019-53841-8.pdf
• Web Site: https://www.nature.com/articles/s41598-019-53841-8
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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  • Crossref
  • CiNii Articles
  • KAKEN