Studies on the Transmission model for Echinococcus multilocularis and its simulations
| Project/Area Number |
16540105
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General mathematics (including Probability theory/Statistical mathematics)
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| Research Institution | Okayama University |
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Principal Investigator |
ISHIKAWA Hirofumi Okayama University, Graduate School of Environmental Science, Professor (00108101)
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| Co-Investigator(Kenkyū-buntansha) |
HIRAI Yasuhisa Okayama University, Faculty of Education, Associate Professor (70156636)
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| Project Period (FY) |
2004 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,310,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | Echinococcus multilocularis / stochastic model / control strategy / Hokkaido / simulation / 数理モデル |
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| Research Abstract |
Echinococcus multilocularis causes human alveolar echinococcus. In Japan, high prevalence of E. multilocularis among the fox population has been reported throughout Hokkaido. Accordingly, control measures, such as fox hunting and the distribution of bait containing Praziquantel, have been conducted. This study developed a transmission model for individuals in the fox population and included a stochastic infection process to assess the prevalence of E. multilocularis. To make our model realistic, we used the worm burden for each individual in the fox population. We assumed that the worm burden depends on the number of protoscoleces in a predated vole and the number of infection experiences. We carried out stochastic simulations with 1000 trials for the situations of Koshimizu and Sapporo, Hokkaido, Japan. The distribution of the worm burden among foxes obtained using the model agreed with dissection data. The simulation indicates that a careful choice of season is necessary for an effective distribution of Praziquantel-containing bait. A stochastic model for E. multilocularis, which can assess the range of the prevalence in the fox population, would be helpful in analyzing their complex life-cycle and also in designing control strategies.
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Report
(5 results)
Research Products
(66 results)
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[Journal Article] Modelling the dynamics and control of Schistosoma japonicum transmission on Bohol island, the Philippines2006
Author(s)
Ishikawa, H., Ohmae, H., Pangilinan, R., Redulla, A., Matsuda, H
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Journal Title
Parasitology International(Concerned) 55, 1
Pages: 23-29
NAID
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Journal Article] Mathematical modelling for the transmission of Schistosoma mekongi : Kratie province in Cambodia2006
Author(s)
Hisakane, N., Ishikawa, H., Kirinoki, M., Sinuon, M., Socheat, D., Matsuda, H
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Journal Title
Parasitic Zoonoses in Asian-Pacific Regions 2006, Eds. Isao Nagano & Yuzo Takahashi.(Sankei-sya Co., Nagoya. Concerned)
Pages: 81-8
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] The estimation of control measures against Schistosoma mekongi using a mathematical model incorporating the dynamics of snails2007
Author(s)
Hisakane, N., Chigusa, Y., Kirinoki, M., Zenihana, T., Matsuda, H., Ishikawa, H
Organizer
48th Annual Meeting of Japanese Society of Tropical Medicine
Place of Presentation
Beppu
Year and Date
2007-10-13
Description
「研究成果報告書概要(欧文)」より
Related Report
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